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DC Water Proposes Green Infrastructure

DC Water is building huge tunnels to comply with a court order to end sewer overflow into local rivers. Now permeable-pavement bike lanes and green roofs could join the mix.


Massive Volcanic Eruption In Indonesia Blankets Region In Ash

Mount Kelud blasted volcanic soot 12 miles into the air on the island of Java as it erupted, killing several people and forcing the evacuation of tens of thousands.

Report: Burning Natural Gas Is Better Than Using Coal

Methane is both a fuel and a potent greenhouse gas. A study in Science magazine suggests that about 50 percent more methane is leaking into the atmosphere than official estimates suggest. Even so, they conclude that it's better for the environment to switch electricity generation from coal power plants to those that burn methane.

Robot Construction Workers Take Their Cues From Termites

Termites are masters of construction in the insect world, working together to construct complex, sky-scraping homes with neither blueprint nor foreman. Harvard engineers have created 8-inch-long robots that can build in the same way — by sensing their environment, and applying a few rules.

China's Moon Rover Wakes Up, But Isn't Out Of The Woods Yet

Ground controllers are no doubt happy that the Jade Rabbit rover survived the lunar night, though a potentially mission-ending mechanical problem has yet to be fixed.

Ancient DNA Ties Native Americans From Two Continents To Clovis

The mysterious Clovis culture, which appeared in North America about 13,000 years ago, appears to be the forerunner of Native Americans throughout the Americas, a study of DNA evidence suggests. Remains from an infant buried more than 12,000 years ago at a Clovis site in modern Montana held the genetic key.

In The World's 'Sixth Extinction' Are Humans The Asteroid?

The dinosaurs were killed during the Fifth Extinction — which scientists suspect was caused by an asteroid. Now, we are living through an epoch that many scientists describe as the Sixth Extinction and this time, human activity is the culprit.

More Findings, More Questions About Value Of Mammograms

A long-running study has been raising questions about the value of mammography for younger women, and recently it has produced yet more evidence to cast doubt on routine screening. The study found no evidence that screening saved lives, even after 25 years of follow-up. Rather, screening may lead instead to unnecessary treatment for many women. The findings are unlikely to settle debate over the value of mammography.

Risky Tech Fixes For Climate Becoming Likelier, Critic Warns

As time runs out to put the brakes on global warming, world leaders seem loath to reduce gas emissions, because it's politically hard, says social scientist Clive Hamilton. Instead, he worries, we'll try to engineer the atmosphere — a tech fix that sounds quicker and simpler – but is fraught with risk.

Scientist Talks The Formulae For Olympic Success

In ski jumping, athletes hurtle off ramps at 60 miles per hour and fly the length of a football field. How do they do it? Melissa Block talks with John Eric Goff about the physics behind the event at the Winter Olympics. Goff is head of the physics department at Lynchburg College in Virginia and author of the book Gold Medal Physics: The Science of Sports.