Pork, farm-raised salmon, chicken and turkey are all on a par when it comes to greenhouse gas emissions, but pigs are in a category of their own when it comes to environmental impact.
In light of the recent deadly outbreak of E. coli in Germany, find out which foods are the riskiest and why.
By huddling together and using synchronized movements, the birds can stay warm in the coldest environment on Earth.
A female squid pheromone turns mild males into fighters with the touch of a tentacle.
Some lizards are no loners, research finds. They hook up with mates and raise tight broods.
Fueled by increasing demand for meat and dairy, growth in livestock production could have serious and irreversible effects on the entire planet.
With more than 2,000 people sickened from salmonella-tainted eggs, we find out just how the bacteria get inside.
The recall includes some 380 million eggs, about 1 percent of total U.S. egg production.
A leatherback turtle has made a surprise return to a Malaysian beach after 32 years, renewing hopes for the endangered species.
These ancient DNA samples could open the door to cloning long-extinct species.
