Mapping the moon

Two NASA probes that spent last year orbiting the moon have returned stunning new geological maps that could help explain how it, Earth, and other planets in our solar system formed. The probes, named Ebb and Flow, flew identical orbits just miles above the moon’s surface to measure its gravity field. Slight disruptions in their paths—caused by the push and […]

Read more

Rising Demand for Meat

Appetite for meat is growing as the developing world becomes more prosperous. But meat—especially beef-can be polarizing, on health, environmental, and ethical grounds. Chicken outpaced beef in the U.S. in 2010. Total U.S. meat consumption peaked in the mid-2000’s and has declined ever since. Argentina’s famous appetite for beef has fallen because of cholesterol consciousness and economic downturns. In countries […]

Read more
1 2 3 4 5 455