ScienceDaily: Top Environment News

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• Even if emissions stop, carbon dioxide could warm Earth for centuries
• Unusual greenhouse gases may have raised ancient Martian temperature
• New genomic study provides a glimpse of how whales could adapt to ocean
• How living cells solved a needle in a haystack problem to produce electrical signals
• The secrets of owls' near noiseless wings
• Great lakes waterfowl die-offs: Finding the source
• Scientists show how cells protect DNA from catastrophic damage
• Different cellular mechanisms behind regenerated body parts

Even if emissions stop, carbon dioxide could warm Earth for centuries Posted: 24 Nov 2013 05:05 PM PST Research suggests that even if carbon-dioxide emissions came to a sudden halt, the carbon dioxide already in Earth's atmosphere could continue to warm our planet for hundreds of years. Thus, it might take a lot less carbon than previously thought to reach the global temperature scientists deem unsafe.

Unusual greenhouse gases may have raised ancient Martian temperature Posted: 24 Nov 2013 05:05 PM PST Much like the Grand Canyon, Nanedi Valles snakes across the Martian surface suggesting that liquid water once crossed the landscape, according to a team of researchers who believe that molecular hydrogen made it warm enough for water to flow.

New genomic study provides a glimpse of how whales could adapt to ocean Posted: 24 Nov 2013 05:05 PM PST Researchers have completed the first in-depth minke whale genome sequence and their new findings shed light on how whales successfully adapted to ocean environment. The data yielded in this study will contribute to future studies of marine mammal diseases, conservation and evolution.

How living cells solved a needle in a haystack problem to produce electrical signals Posted: 24 Nov 2013 05:05 PM PST Scientists have figured out how cells do the improbable: pick the charged calcium ions out of vast sodium sea to generate electrical signals. The speed and accuracy of this selection is crucial to the beating of the heart and the flow of nerve impulses in the brain. The finding is likely to assist the development of new drugs, such as safer medications for chronic pain.

The secrets of owls' near noiseless wings Posted: 24 Nov 2013 06:35 AM PST Many owl species have developed specialized plumage to effectively eliminate the aerodynamic noise from their wings – allowing them to hunt and capture their prey in silence. A research group is working to solve the mystery of exactly how owls achieve this acoustic stealth -- work that may one day help bring "silent owl technology" to the design of aircraft, wind turbines, and submarines.

Great lakes waterfowl die-offs: Finding the source Posted: 24 Nov 2013 06:35 AM PST A deadly menace stalks the loons, gulls and other water birds of the Great Lakes region: Type E botulism. Cases of the disease are on the rise, and to understand die-off origin and distribution, ocean engineers are developing a novel way of tracking waterfowl carcasses to determine the source of lethal outbreaks.

Scientists show how cells protect DNA from catastrophic damage Posted: 21 Nov 2013 10:00 AM PST Researchers have unveiled a profound biological process that explains how DNA can be damaged during genome replication. In addition, the scientists developed a new analytical tool to measure the cell's response to chemotherapy, which could have an important impact on future cancer therapy.

Different cellular mechanisms behind regenerated body parts Posted: 21 Nov 2013 09:59 AM PST Scientists have discovered that two separate species of salamander differ in the way their muscles grow back in lost body parts. Their findings on the species-specific solutions demonstrate there is more than one mechanism of tissue regeneration.

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