Winters in the northern hemisphere are brutal. The harsh conditions drive some species to hibernate; bears reduce their metabolic state to conserve energy until spring. Forests also endure winter by conserving energy; they ...
Earth Sciences
May 27, 2019
0
355
On Aug. 17, 1959, back when Dwight D. Eisenhower was president, the U.S. had yet to send a human to space and the nation's flag sported 49 stars, Yellowstone National Park shook violently for about 30 seconds. The shock was ...
Earth Sciences
May 23, 2019
1
934
In countless grade-school science textbooks, the Earth's mantle is a yellow-to-orange gradient, a nebulously defined layer between the crust and the core.
Earth Sciences
May 20, 2019
0
156
The processes that create ozone pollution in the summer can also trigger the formation of wintertime air pollution, according to a new study from researchers at the University of Colorado Boulder and NOAA, in partnership ...
Earth Sciences
May 9, 2019
0
37
Over 11 field seasons, between 1999 and 2010, ornithologist Cagan Sekercioglu trekked through the forests and coffee fields of Costa Rica to study how tropical birds were faring in a changing agricultural landscape. Through ...
Ecology
Apr 29, 2019
0
54
Contrary to what you may have been taught, water doesn't always freeze to ice at 32 degrees F (zero degrees C). Knowing, or controlling, at what temperature water will freeze (starting with a process called nucleation) is ...
Materials Science
Apr 12, 2019
0
1085
All air-breathing vertebrates have a larynx—a structure of muscles and folds that protects the trachea and, in many animals, vibrates and modulates to produce a stunning array of sounds.
Plants & Animals
Apr 10, 2019
0
104
The Federal Bureau of Investigation is responsible for tracking hate crimes across the country, but the data are notoriously unreliable. Despite the FBI recording an all-time high in hate-motivated incidents in 2017 (the ...
Internet
Apr 8, 2019
1
7
Have you ever been running on a sidewalk making pretty good time, then hit a hill and slowed way down? If so, you've experienced how slope affects travel rates. For most of us, understanding how slope steepness impacts our ...
Environment
Apr 3, 2019
0
34
Pores in atmospheric particles allow water to condense, leading to the formation of ice crystals in humid but unsaturated air. This is a new way of thinking of ice crystal formation in clouds, particularly cirrus clouds.
Earth Sciences
Apr 1, 2019
0
96
