To Arctic Animals, Time of Day Really Doesn’t Matter

Wild arctic reindeer in the wilderness of Svalbard islands, Norway. (Credit: iStockphoto/Laila Røberg)

ScienceDaily (Mar. 15, 2010) — In the far northern reaches of the Arctic, day versus night often doesn't mean a whole lot. During parts of the year, the sun does not set; at other times, it's just the opposite. A new study reported [...]

Can a Single Layer of Cells Control a Leaf’s Size?

ScienceDaily (Mar. 15, 2010) — Ever looked carefully at the leaves on a plant and noticed their various sizes and shapes? Why are they different? What controls the size and shape of each individual leaf? Very little is known about the developmental control of leaf size and shape, and understanding the mechanisms behind this is [...]

Fishery Management Practices for Beluga Sturgeon Must Change, Experts Urge

Immature sturgeon in an aquaculture facility in Kazakhstan. (Credit: Institute for Ocean Conservation Science)

ScienceDaily (Mar. 15, 2010) — A first-of-its-kind study of a Caspian Sea beluga sturgeon (Huso huso) fishery demonstrates current harvest rates are four to five times higher than those that would sustain population abundance. The study's results, which will be published in [...]

Climate report shows Australia getting warmer

A man sunbathes on rocks at a beach in Melbourne January 31, 2009.
Credit: Reuters/Mick Tsikas

(Reuters) – Australia's top scientists on Monday released a "State of the Climate" report at a time of growing scepticism over climate change as a result of revelations of errors in some global scientific reports.

 
The scientists said their monitoring and research [...]

The Milky Way’s Monster Black Hole Awakes! Fired Out a Massive Flare 300 Years Ago

This new X-ray image of the center of the Milky Way above is dominated by Sagittarius A. The black hole and several massive young stars in the chaotic region are creating the surrounding haze of superheated gas that shows up in X-ray light.

Astronomers have long wondered why it was that the super-massive black hole in [...]

Mars Constantly Loses Part of Its Atmosphere to Space Due to Solar Wind

Mars is constantly losing part of its atmosphere to space. (Credit: NASA)

ScienceDaily (Mar. 14, 2010) — Space physicists from the University of Leicester are part of an international team that has identified the impact of the Sun on Mars' atmosphere.

Writing in the AGU journal Geophysics Research Letters, the scientists report that Mars is constantly losing [...]

Compliant Systems: Flexible Yet Strong Materials Allow Aircraft Wings to Flex With Air Flow

An adaptive wing support structure can be constructed using compliant systems. It can be molded in one piece. (Credit: Image courtesy of Empa)

ScienceDaily (Mar. 14, 2010) — Those who witnessed the first takeoff of an Airbus A380 Superjumbo from Zurich airport at the end of January know that elegant is not the right word for [...]

Unlocking the Opium Poppy’s Biggest Secret: Genes That Make Codeine, Morphine

ScienceDaily (Mar. 14, 2010) — Researchers at the University of Calgary have discovered the unique genes that allow the opium poppy to make codeine and morphine, thus opening doors to alternate methods of producing these effective painkillers either by manufacturing them in a lab or controlling the production of these compounds in the plant.

University of [...]

Mars Dunes: On the Move?

Three pairs of before and after images from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter illustrate movement of ripples on dark sand dunes in the Nili Patera region of Mars. (Credit: NASA/JPL-Caltech/University of Arizona/International Research School of Planetary Sciences)

ScienceDaily (Mar. 13, 2010) — New studies of ripples and dunes [...]

Prehistoric Response to Global Warming Informs Human Planning Today

UB anthropologist Ezra Zubrow and colleagues are investigating climate changes experienced by ancient societies living in remote Arctic regions. (Credit: Image courtesy of University at Buffalo)

ScienceDaily (Mar. 13, 2010) — Since 2004, University at Buffalo anthropologist Ezra Zubrow has worked intensively with teams of scientists in the Arctic regions of St. James Bay, Quebec, northern [...]

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