South America was a frightening place during the Miocene. More than 10 million years ago, a vast lake covered much of the continent, home to giant turtles and crocodylians.
Islands are widely recognized as natural laboratories of evolution. The ocean restricts movement among islands, allowing isolated populations to adapt to different environments and, at times, diverge into new species. However, on large islands, geographic distance may restrict movement, while environmental variation may impose divergent selection, thereby promoting adaptive divergence. Does adaptive divergence occur not only among islands but also within islands?
You may have heard the phrase "we are made of star-stuff." This statement by the astronomer Carl Sagan refers to the fact that elements heavier than hydrogen and helium were forged in the centers of the first stars. But how does this star-stuff evolve into the chemistry of rocks, plants and people?
A brief chat about firearm safety can sharply increase willingness among gun owners to consider temporarily storing their firearms outside the home during times of crisis, a step that could help reduce suicide risk, according to a Rutgers-led study.
Hurricane Lala was pulling away from Hawaii's Big Island early Sunday as heavy rain and strong winds struck the U.S. Pacific state and officials warned of potentially dangerous flooding.
Water-bombing aircraft and farmers' tractors joined forces Sunday to help firefighters tame Belgium's largest modern-day wildfire, which has scorched vast swaths of a hard-to-reach nature reserve near the German border.
Japanese scientists are readying a mission to Mars' moons to retrieve samples that may unlock the origins of the solar system and life on Earth, although a rival Chinese mission aims to make it back first.
Researchers at Rice University have found that gently squeezing a crystal of iron sulfide can change two of its unusual properties at the same time: its tiny magnetic signal and the way electricity moves through it. The result gives scientists a clearer picture of how a newly recognized class of magnetic materials works and suggests a simple way to control their behavior.
