My picks from ScienceDaily

Light-treatment Device To Improve Sleep Quality In The Elderly:

Sleep disturbances increase as we age. Some studies report more than half of seniors 65 years of age or older suffer from chronic sleep disturbances. Researchers have long believed that the sleep disturbances common among the elderly often result from a disruption of the body's circadian rhythms -- biological cycles that repeat approximately every 24 hours.

High Arctic Mammals Wintered In Darkness 53 Million Years Ago:

Ancestors of tapirs and ancient cousins of rhinos living above the Arctic Circle 53 million years ago endured six months of darkness each year in a far milder climate than today that featured lush, swampy forests, according to a new study led by the University of Colorado at Boulder.

Wiping Out The World's Mass Migrations: First Analysis Of The Effect Of Habit Changes On Migrating Grazers:

Densely packed wildebeests flowing over the Serengeti, bison teeming across the Northern Plains--these iconic images extend from Hollywood epics to the popular imagination. But the fact is, all of the world's large-scale terrestrial migrations have been severely reduced and a quarter of the migrating species are suspected to no longer migrate at all because of human changes to the landscape. A recently published research paper highlights this global change and presents the first analysis of the dwindling mass migrations.

Massive Online 'Macroscopic Observatory' Of Earth's Biodiversity To Be Created:

Wanted (soon): observations from environment-minded citizens that will allow science to study biodiversity at a planetary level in a massive, comprehensive virtual observatory of historic importance. The online information system for life on Earth, now under construction, will take its place alongside the global network that records earthquakes, or the world meteorology data network that pools information to predict the weather.