Category: Big Questions - Page 62

A new international study casts doubt on the leading theory of what causes ice ages around the world — changes in the way the Earth…

For more than 250 million years, four-limbed land animals known as tetrapods have repeatedly conquered the Earth’s oceans. These…

Surface meltwater regularly travels to the bottom of the Greenland Ice Sheet and lubricates the flow of the ice into the ocean, but new…

Plumes seen reaching high above the surface of Mars are causing a stir among scientists studying the atmosphere on the Red Planet On two…

Disagreements in how we use words can cause major confusion. Sometimes, someone uses the word “far” to mean 50 miles, and other times…

For several decades scientists have been interested in the ability of psychrophilic (cold- loving) microbial communities to degrade the…

Human-caused climate change, ocean acidification and species extinctions may eventually threaten the collapse of civilization, according to…

Harnessing ‘people power’ to manage fisheries in the developing world has significantly benefited local communities and coral…

Using an experiment carried into space on a NASA suborbital rocket, astronomers at Caltech and their colleagues have detected a diffuse…

A new analysis of geologic history may help solve the riddle of the “Cambrian explosion,” the rapid diversification of animal…