Ancient Siberian dogs relied on humans for seafood diets

As early as 7,400 years ago, Siberian dogs had evolved to be far smaller than wolves, making them more dependent on humans for food including sea mammals and fish trapped below the ice, a new study showed Friday.

Manmade mass now outweighs life on Earth: study

For the first time in history manmade materials now likely outweigh all life on Earth, scientists said Wednesday in research detailing the "crossover point" at which humanity's footprint is heavier than that of the natural ...

Beyond the green revolution

There has been a substantial increase in food production over the last 50 years, but it has been accompanied by a narrowing in the diversity of cultivated crops. New research shows that diversifying crop production can make ...

page 1 from 4