Archive for the ‘Earth Science’ Category

Planetary limits: More than just global warming - Thursday, October 1st, 2009

Scientists propose 9 limits on human actions: Wrecking ozone, over-using fertilizer, killing species could block key “ecosystem services.” Are there natural limits to fresh water use and pollution?

No joke: Laughing gas attacks ozone! - Thursday, September 3rd, 2009

The ozone layer protects Earth from UV rays: Twenty-two years after a treaty to protect ozone, how is the layer doing? What has happened to the ozone hole above Antarctica?

“No prob” sez life to crashing asteroids! - Thursday, May 21st, 2009

The “late heavy bombardment” burned out any life that was around 4 billion years ago — or not… Plenty of high temperature bacteria could have survived in deep rocks, says a new study.

New concern as ocean grows more acidic - Thursday, November 13th, 2008

Each hour, the ocean dissolves 1 million tons of carbon dioxide from burning fossil fuel. As the water grows more acidic, sound travels further. What will happen to marine mammals, which rely on an exquisite sense of hearing?

Earthquake safety: It begins at home - Thursday, May 22nd, 2008

Hundreds of millions live and work in houses and schools that will collapse when the earth starts quaking. The lesson from California, where big quakes cause small death tolls, is this: Smart engineering can save lives.

Looking anew at diamonds - Thursday, January 10th, 2008

New analysis uses light to distinguish one diamond from another. Technique may help jewelers, but won’t help the battle against the “conflict diamonds” that are fueling wars in Africa.

Winter’s Weird Weather: What’s the Cause? - Thursday, January 11th, 2007

Some call it Fall. Some call it spring. But nobody in the Midwest, East Coast or Northern Europe is calling it “winter.” What’s up with our weather?

Antarctic Ozone Hole Sets New Record - Thursday, October 26th, 2006

Measurements show a huge ozone hole. How can this happen? We thought ozone-destroying chemicals were being phased out…

Katrina + 1: Where Should We Rebuild? - Thursday, August 24th, 2006

It’s a fact of life: Hurricanes and floods happen. So why are people rebuilding in the path of storms and floods? Is there a smarter way to plan development?

NASA to Earth Science: Take the Back Seat! - Thursday, August 3rd, 2006

To understand and protect the home planet: it’s no longer a key NASA mission. What will we lose as NASA turns its eyes toward the moon and Mars?

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