Science

Scientists Find Stone Age Burial Ground From Once-green Sahara

A team of paleontologists inadvertently discovered the remains of a Stone Age cemetery in the Sahara desert, revealing clues about the lives of the hunter-gatherers who lived in the once-temperate region. A lead researcher details the finds.

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Bush Administration Proposes Changes to Endangered Species Act Rules

By PBS News Hour

The Bush administration on Monday proposed a regulatory change that would allow federal agencies to decide for themselves whether construction projects such as roads and dams have the potential to harm endangered animals and plants.

Former Oilman Makes Bid for Homegrown Alternative Energy

T. Boone Pickens, a Texan oil tycoon, has made it his mission to promote massive new investment toward alternative energy sources. Pickens discusses his plan and efforts to make energy independence a central issue in the fall campaign.

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World’s Most Powerful Particle Accelerator Set to Launch

By PBS News Hour

Stretching 17 miles around, a mammoth machine that straddles the Swiss-Franco border will soon start launching the biggest experiments ever attempted in high-energy physics.

Justice Department, Unsealed Papers Outline Anthrax Case Against Dead Scientist

By PBS News Hour

The U.S. Justice Department said Wednesday that Army scientist Bruce Ivins "was the only person responsible" for the mailed anthrax attacks that killed five people and rattled the nation in 2001.

Concerns Surface After A Gorilla Haven Discovery

A discovery of 125,000 lowland gorillas in the Congo basin changes population estimates of the critically endangered species, although threats from poachers and little funding for staff and operations present ongoing challenges. The Wildlife Conservation Society's president discusses the difficulties…

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Endangered Gorilla ‘Mother Lode’ Uncovered in Republic of Congo

By PBS News Hour

A survey of the vast swamps and forests in the northern Republic of Congo has revealed 125,000 western lowland gorillas living there, more than double the previous known tally of the endangered animal.

Researchers Find Drug That Mimics Effects of Exercise

Scientists announced this week that they've found a chemical compound that allows mice to run 44 percent longer on a treadmill -- without doing any exercise. Lead researcher Ronald Evans discusses the results and what they could mean for humans.

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Scientists Create Stem Cells From Lou Gehrig’s Disease Patients

By PBS News Hour

In a stem cell research breakthrough, scientists have reprogrammed skin cells from two elderly patients with Amyotrophic Lateral Sclerosis -- also called ALS, or Lou Gehrig's Disease -- to act like stem cells.

FCC Rules Comcast Violated Internet Access Policy

By PBS News Hour

A divided Federal Communications Commission ruled Friday that Comcast Corp. violated federal policy when it blocked Internet traffic for some subscribers. The cable giant has been ordered to change the way it manages its network.