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A reporter's PressPass is required to access this story until the embargo expires on 25-Sep-2014 12:00 PM EDT

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Why Do Leaves Change Color in the Fall? (Video)

It’s the first day of autumn, and the telltale signs are here: crisp weather, pumpkin spice lattes and, most importantly, the leaves are changing colors. Ever wonder why some leaves turn red, others yellow and some just turn brown? We’ll tell you all about the chemistry behind this seasonal spectacle in the latest Reactions episode.

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Singapore Researchers Discover a Gene That Increases Incidence of Acute Myelogenous Leukaemia

A novel study by the Cancer Science Institute of Singapore (CSI Singapore) at the National University of Singapore (NUS) found that an increase in a gene known as Leo1 affects other genes that are directly implicated in acute myelogenous leukaemia (AML), increasing the incidence of cancer.

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Cancer Cells Adapt Energy Needs to Spread Illness to Other Organs

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Scientists at The University of Texas MD Anderson Cancer Center have found that cancer cells traveling to other sites have different energy needs from their “stay-at-home” siblings which continue to proliferate at the original tumor site.

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X-Rays Unlock a Protein’s SWEET Side

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Understanding just how sugar makes its way into the cell could lead to the design of better drugs for diabetes patients and an increase in the amount of fruits and vegetables farmers are able to grow. Stanford University researchers have recently uncovered one of these "pathways" into the cell by piecing together proteins slightly wider than the diameter of a strand of spider silk.

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Scientists Discover an On/Off Switch for Aging Cells

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The switch controls the growth of telomeres, the timekeepers of cells.

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Researchers Study Vital ‘On/Off Switches’ That Control When Bacteria Turn Deadly

No matter how many times it’s demonstrated, it’s still hard to envision bacteria as social, communicating creatures. But by using a signaling system called “quorum sensing,” these single-celled organisms radically alter their behavior to suit their population. Helen Blackwell, a professor of chemistry at the University of Wisconsin-Madison, has been making artificial compounds that mimic the natural quorum-sensing signals.

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NYU Langone Scientists Report Reliable and Highly Efficient Method for Making Stem Cells

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NYU Langone Medical Center scientists have found a way to boost dramatically the efficiency of the process for turning adult cells into so-called pluripotent stem cells by combining three well-known compounds, including vitamin C.

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