Dein Suchergebnis zum Thema: per

Nowhere else are primates as diverse… or as endangered.
Although there are only 32 humans per square kilometer

What can Earth and its species tell us about the possibility of life on other planets?
Well, actually, we don’t find the planets, per se,

Can we, and should we, bring back the mammoth?
the fecundity typically drops around 7.5 children per

Astrophysicists are discovering new extrasolar planets—those outside our Solar System—almost daily.
example, the Sun wobbles at about 12 meters (40 feet) per

The Sun continuously sheds its skin, blowing a fierce wind of charged particles in all directions, including toward us.
solar particles into space as quickly as 500 miles per

Are fecal transplants the future of treating certain life-threatening diseases? 
It causes 30,000 deaths per year just in this country

An innovative twin-satellite mission is watching water move across our blue planet.
loss of approximately 150 cubic kilometers of ice per

Geologists, seismologists and computer modelers use data to help prepare for the inevitable next wave.
Normally, one psi (pound per square inch) of seawater

Explore an ancient city carved into sandstone cliffs, hidden deep within the desert of modern-day Jordan.
The area received only about six inches of rain per

From oceans to rivers, sharks, rays, and skates are everywhere. And they’re so diverse! Get to know the different kinds.
filter 162,000 gallons (736,000 liters) of water per