Feature Channels: Evolution and Darwin

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Released: 1-Mar-2021 2:25 PM EST
The human brain grew as a result of the extinction of large animals
Tel Aviv University

A new paper by Dr. Miki Ben-Dor and Prof. Ran Barkai from the Jacob M. Alkow Department of Archaeology at Tel Aviv University proposes an original unifying explanation for the physiological, behavioral and cultural evolution of the human species, from its first appearance about two million years ago, to the agricultural revolution (around 10,000 BCE).

26-Feb-2021 1:55 PM EST
Neandertals had the capacity to perceive and produce human speech
Binghamton University, State University of New York

Neandertals -- the closest ancestor to modern humans -- possessed the ability to perceive and produce human speech, according to a new study published by an international multidisciplinary team of researchers including Binghamton University anthropology professor Rolf Quam and graduate student Alex Velez.

Released: 24-Feb-2021 1:35 PM EST
Scientists describe earliest primate fossils
University of Washington

A new study published Feb. 24 in the journal Royal Society Open Science documents the earliest-known fossil evidence of primates. These creatures lived less than 150,000 years after the Cretaceous-Paleogene mass extinction event that killed off non-avian dinosaurs and saw the rise of mammals.

22-Feb-2021 7:00 AM EST
Evidence That Earth’s First Cells Could Have Made Specialized Compartments
Biophysical Society

ROCKVILLE, MD – Scientists have long speculated about the features that our long-ago single-celled ancestors might have had, and the order in which those features came about.

   
Released: 22-Feb-2021 1:00 PM EST
Rapid evolution may help species adapt to climate change and competition
Washington State University

Loss of biodiversity in the face of climate change is a growing worldwide concern. Another major factor driving the loss of biodiversity is the establishment of invasive species, which often displace native species.

Released: 22-Feb-2021 11:35 AM EST
‘Jumping genes’ repeatedly form new genes over evolution
Cornell University

A study, “Recurrent Evolution of Vertebrate Transcription Factors by Transposase Capture,” published Feb. 19 in Science, investigates how genetic elements called transposons, or “jumping genes,” are added into the mix during evolution to assemble new genes through exon shuffling.

Released: 19-Feb-2021 1:20 PM EST
Origin of life -- Did Darwinian evolution begin before life itself?
Ludwig-Maximilians-Universität München (Munich)

Before life emerged on Earth, many physicochemical processes on our planet were highly chaotic.

Released: 16-Feb-2021 10:55 AM EST
First humans in Tasmania must have seen spectacular auroras
University of Melbourne

Drilling a 270,000-year old core from a Tasmanian lake has provided the first Australian record of a major global event where the Earth's magnetic field 'switched '- and the opportunity to establish a precedent for developing new paleomagnetic dating tools for Australian archaeology and paleosciences.

Released: 15-Feb-2021 11:20 AM EST
Neanderthals and Homo sapiens used identical Nubian technology
Max Planck Institute for the Science of Human History

Long held in a private collection, the newly analysed tooth of an approximately 9-year-old Neanderthal child marks the hominin's southernmost known range.

Released: 15-Feb-2021 10:45 AM EST
Capuchin monkey genome reveals clues to its long life and large brain
University of Liverpool

An international team of scientists has sequenced the genome of a capuchin monkey for the first time, uncovering new genetic clues about the evolution of their long lifespan and large brains.

8-Feb-2021 12:25 PM EST
How a Single Gene Alteration May Have Separated Modern Humans from Predecessors
UC San Diego Health

UC San Diego researchers discovered a single gene alteration that may help explain cognitive differences between modern humans and our predecessor, and used that information to develop Neanderthal-like brain organoids in the lab.

   
Released: 5-Feb-2021 3:25 PM EST
Nehandertals' gut microbiota and the bacteria helping our health
Universita di Bologna

Neanderthals' gut microbiota already included some beneficial micro-organisms that are also found in our own intestine.

27-Jan-2021 3:05 PM EST
New clues emerge in how early tetrapods learned to live — and eat — on land
University of Chicago Medical Center

New research out of the University of Chicago has found evidence that the lobe-finned fish species Tiktaalik roseae was capable of both biting and suction during feeding, similar to modern-day gars. These results provide evidence that bite-based feeding originally evolved in aquatic species and was later adapted for use on land.

Released: 29-Jan-2021 2:05 PM EST
Experiments show the record of early life could be full of "false positives"
Geological Society of America (GSA)

For most of Earth's history, life was limited to the microscopic realm, with bacteria occupying nearly every possible niche.

Released: 29-Jan-2021 10:10 AM EST
Study: Did cobras first spit venom to scare pre-humans?
Cornell University

New research suggests that for some cobras, the venom evolved additional complexity to deter potential enemies – possibly including Homo erectus, humans’ extinct close relative.

28-Jan-2021 10:30 AM EST
New Study Unravels Darwin’s ‘Abominable Mystery’ Surrounding Origin of Flowering Plants
University of Bristol

The origin of flowering plants famously puzzled Charles Darwin, who described their sudden appearance in the fossil record from relatively recent geological times as an “abominable mystery”.

Released: 25-Jan-2021 2:45 PM EST
Stimulating brain pathways shows origins of human language and memory
Newcastle University

Scientists have identified that the evolutionary development of human and primate brains may have been similar for communication and memory.

Released: 25-Jan-2021 12:30 PM EST
Women influenced coevolution of dogs and humans
Washington State University

Man's best friend might actually belong to a woman.

   
21-Jan-2021 2:55 PM EST
Competition among human females likely contributed to concealed ovulation
Arizona State University (ASU)

Humans are among the few species that lack overt physical indicators of female fertility. One explanation for concealed ovulation in human females is that hiding fertility from males helps females secure resources from males for raising children. A new model developed by a team of evolutionary scientists casts doubt on this idea, showing that females might have evolved to conceal ovulation from one another, not from males.

   
Released: 22-Jan-2021 12:25 PM EST
Chimpanzee friends fight together to battle rivals
Max Planck Institute for Evolutionary Anthropology

Chimpanzees, one of the closest relatives of humans, cooperate on a group level - in combative disputes, they even cooperate with group members to whom they are not related. Those involved in fights with neighbouring groups put themselves at risk of serious injury or even death.

Released: 21-Jan-2021 3:25 PM EST
Study of flowers with two types of anthers solves mystery that baffled Darwin
University of California, Santa Cruz

Some flowers use a clever strategy to ensure effective pollination by bees, doling out pollen gradually from two different sets of anthers

15-Jan-2021 9:55 AM EST
Amber-encased fossil shines light on evolution of bioluminescent insects
University of Bristol

Trapped in amber for ~100 million years, an exceptionally well-preserved, light-producing beetle sheds light on the diversification of bioluminescent beetles in the Cretaceous period and provides the missing fossil link between fireflies’ living relatives.

Released: 15-Jan-2021 1:15 PM EST
Snakes evolve a magnetic way to be resistant to venom
University of Queensland

Certain snakes have evolved a unique genetic trick to avoid being eaten by venomous snakes, according to University of Queensland research.

Released: 14-Jan-2021 10:35 AM EST
Scientists discover the secret of Galápagos' rich ecosystem
University of Southampton

New research has unlocked the mystery of how the Galápagos Islands, a rocky, volcanic outcrop, with only modest rainfall and vegetation, is able to sustain its unique wildlife habitats.

11-Jan-2021 1:05 PM EST
Asian butterfly populations show different mimicry patterns thanks to genetic ‘switch’
University of Chicago Medical Center

A new study by researchers at the University of Chicago and the City College of New York (CCNY) has identified a unique, genetic “mimicry switch” that determines whether or not male and female Elymnias hypermnestra palmflies mimic the same or different species of butterflies.

Released: 12-Jan-2021 8:40 AM EST
Genomes reveal new insights into iconic Aussie animals
University of Adelaide

The genomes of egg-laying monotreme mammals, platypus and echidna, today have been published in the prestigious journal Nature.

Released: 8-Jan-2021 10:15 AM EST
Which came first, sleep or the brain?
Kyushu University

Stay awake too long, and thinking straight can become extremely difficult. Thankfully, a few winks of sleep is often enough to get our brains functioning up to speed again. But just when and why did animals start to require sleep? And is having a brain even a prerequisite?

Released: 8-Jan-2021 9:45 AM EST
Research explains why crocodiles have changed so little since the age of the dinosaurs
University of Bristol

New research by scientists at the University of Bristol explains how a 'stop-start' pattern of evolution, governed by environmental change, could explain why crocodiles have changed so little since the age of the dinosaurs.

Released: 7-Jan-2021 10:05 AM EST
Discovery of 2-Million-Year-Old Stone Tools in East Africa Reveal Early Humans Could Make Plans and Adapt to Environmental Change
McMaster University

An international team, including Canadian researchers from the University of Calgary and McMaster University, has discovered stone tools in Tanzania dating back 2 million years, the oldest evidence of human activity in what is known as the Cradle of Humankind.

Released: 30-Dec-2020 2:20 PM EST
A single gene 'invented' haemoglobin several times
CNRS (Centre National de Recherche Scientifique / National Center of Scientific Research)

Thanks to the marine worm Platynereis dumerilii, an animal whose genes have evolved very slowly, scientists from CNRS, Université de Paris and Sorbonne Université, in association with others at the University of Saint Petersburg and the University of Rio de Janeiro, have shown that while haemoglobin appeared independently in several species, it actually descends from a single gene transmitted to all by their last common ancestor.

   
Released: 23-Dec-2020 3:45 PM EST
Remarkable new species of snake found hidden in a biodiversity collection
University of Kansas

To be fair, the newly described Waray Dwarf Burrowing Snake (Levitonius mirus) is pretty great at hiding

Released: 22-Dec-2020 1:10 PM EST
Ancient DNA sheds light on the peopling of the Mariana Islands
Max Planck Institute for Evolutionary Anthropology

To reach the Mariana Islands in the Western Pacific, humans crossed more than 2,000 kilometres of open ocean, and around 2,000 years earlier than any other sea travel over an equally long distance. They settled in the Marianas around 3,500 years ago, slightly earlier than the initial settlement of Polynesia.

Released: 21-Dec-2020 11:20 AM EST
Crikey! Massive prehistoric croc emerges from South East Queensland
University of Queensland

A prehistoric croc measuring more than five metres long - dubbed the 'swamp king' - ruled south eastern Queensland waterways only a few million years ago.

Released: 18-Dec-2020 1:20 PM EST
The 'crazy beast' that lived among the dinosaurs
Taylor & Francis

Adalatherium is an important piece in a very large puzzle on early mammalian evolution in the southern hemisphere, one in which most of the other pieces are still missing

Released: 10-Dec-2020 2:05 PM EST
Academy scientists describe 213 species in 2020
California Academy of Sciences

This past year, researchers at the California Academy of Sciences added 213 plant and animal species to the tree of life, providing deeper insight into the rich biodiversity of our planet and helping to inform global conservation strategies.

Released: 10-Dec-2020 1:35 PM EST
Artificial intelligence finds surprising patterns in Earth's biological mass extinctions
Tokyo Institute of Technology

Charles Darwin's landmark opus, On the Origin of the Species, ends with a beautiful summary of his theory of evolution, "There is a grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.

8-Dec-2020 12:25 PM EST
A simple rule drives the evolution of useless complexity
University of Chicago Medical Center

A new study at the University of Chicago has shown that elaborate protein structures accumulate over deep time even when they serve no purpose, because a universal biochemical property and the genetic code force natural selection to preserve them.

7-Dec-2020 2:20 PM EST
Evolution May Be to Blame for High Risk of Advanced Cancers in Humans
UC San Diego Health

UC San Diego researchers discovered that most people no longer produce the Siglec-12 protein, but some of those who do are at twice the risk for advanced cancer.

Released: 2-Dec-2020 4:05 PM EST
Incredible Vision in Ancient Marine Creatures Drove an Evolutionary Arms Race
University of Adelaide

Ancient deep sea creatures called radiodonts had incredible vision that likely drove an evolutionary arms race according to new research published today.

Released: 24-Nov-2020 4:35 PM EST
MTSU researcher-led study: Instructors need to address compatibility of religion, science while teaching evolution
Middle Tennessee State University

Study suggests that a difference in culture and beliefs between science instructors and students may inadvertently lead to low acceptance of evolution among minority students — particularly Black students — in biology.

   
Released: 23-Nov-2020 8:00 AM EST
Darwin’s handwritten pages from On the Origin of Species go online for the first time
National University of Singapore (NUS)

Two original pages from the handwritten draft of Darwin’s On the Origin of Species, along with rare letters, and never-before-seen reading notes have been added to Darwin Online. This scholarly portal dedicated to naturalist Charles Darwin was founded by Dr John van Wyhe from the National University of Singapore’s (NUS) Department of Biological Sciences, and Tembusu College.

Released: 17-Nov-2020 3:05 PM EST
Small differences, big impact
Stowers Institute for Medical Research

In a new study, researchers at the Stowers Institute for Medical Research have identified a handful of variations in an amino acid sequence critical for retaining the ancestral function of a gene over the course of 600 million years of evolution.

Released: 16-Nov-2020 6:00 AM EST
Genetic Code Evolution and Darwin’s Evolution Theory Should Consider DNA an ‘Energy Code’
Rutgers University-New Brunswick

Darwin’s theory of evolution should be expanded to include consideration of a DNA stability “energy code” – so-called “molecular Darwinism” – to further account for the long-term survival of species’ characteristics on Earth, according to Rutgers scientists. The iconic genetic code can be viewed as an “energy code” that evolved by following the laws of thermodynamics (flow of energy), causing its evolution to culminate in a nearly singular code for all living species, according to the Rutgers co-authored study in the journal Quarterly Reviews of Biophysics.

Released: 10-Nov-2020 4:10 AM EST
Half a billion years old microfossils may yield new knowledge of animal origins
Uppsala University

When and how did the first animals appear? Science has long sought an answer.

Released: 9-Nov-2020 11:35 AM EST
Newly discovered fossil documents small-scale evolutionary changes in an extinct human species
Washington University in St. Louis

Males of the extinct human species Paranthropus robustus were thought to be substantially larger than females — much like the size differences seen in modern-day primates such as gorillas, orangutans and baboons. But a new fossil discovery in South Africa instead suggests that P. robustus evolved rapidly during a turbulent period of local climate change about 2 million years ago, resulting in anatomical changes that previously were attributed to sex.

Released: 3-Nov-2020 11:55 AM EST
Fossils reveal mammals mingled in age of dinosaurs
Yale University

The fossil remains of several small mammals discovered in tightly packed clusters in western Montana provide the earliest evidence of social behavior in mammals, according to a new study co-authored by a Yale scientist.

Released: 3-Nov-2020 11:05 AM EST
Two centuries of Monarch butterflies show evolution of wing length
University of California, Davis

North America's beloved Monarch butterflies are known for their annual, multi-generation migrations in which individual insects can fly for thousands of miles. But Monarchs have also settled in some locations where their favorite food plants grow year round, so they no longer need to migrate.

30-Oct-2020 11:10 AM EDT
New study finds earliest evidence for mammal social behavior
University of Washington

A new study indicates that the earliest evidence of mammal social behavior goes back to the Age of Dinosaurs. A multituberculate that lived about 75.5 million years ago, Filikomys primaevus engaged in multi-generational, group-nesting and burrowing behavior, and possibly lived in colonies.

Released: 29-Oct-2020 11:10 AM EDT
Antarctica yields oldest fossils of giant birds with 21-foot wingspans
University of California, Berkeley

Fossils recovered from Antarctica in the 1980s represent the oldest giant members of an extinct group of birds that patrolled the southern oceans with wingspans of up to 21 feet that would dwarf the 11½-foot wingspan of today's largest bird, the wandering albatross.



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