Earth news

Selling and buying water rights

Trying to sell or buy water rights can be a complicated exercise. First, it takes time and effort for buyers and sellers to find each other, a process that often relies on word-of-mouth, local bulletin boards, ...

21 hours ago
5 / 5 (3) 1

Researchers track ammonium source in open ocean

To understand the extent to which human activities are polluting Earth's atmosphere and oceans, it's important to distinguish human-made pollutants from compounds that occur naturally. A recent study co-authored ...

Oct 29, 2014
5 / 5 (6) 1

Clean smell doesn't always mean clean air

Some of the same chemical reactions that occur in the atmosphere as a result of smog and ozone are actually taking place in your house while you are cleaning. A researcher in Drexel's College of Engineering ...

Oct 29, 2014
5 / 5 (4) 0

NASA image: Smoke and haze over China

Smoke and haze hang over a large portion of eastern China in this image captured by the Aqua satellite on October 29, 2014. China uses the method of "slash and burn" agriculture to rid their fields of leftover ...

Oct 29, 2014
5 / 5 (5) 1

Coming up for air

Sometimes you've got to hit bottom to battle your way back up. In 1992, the United Nations cited Mexico City as having the worst air quality in the world, with so much pollution that birds sometimes dropped ...

Oct 29, 2014
5 / 5 (1) 0