Science

NASA Launch Begins Effort to Return Man to the Moon

NASA launched two satellites to the moon last week, the first step toward its goal of returning a human to the lunar surface. At the start of this new effort, though, a debate has been ignited at the space agency…

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White House Says Climate Change Already Affecting U.S.

By Admin, PBS News Hour

Global climate change is already affecting the United States, according to a report by federal scientists released Tuesday.

Cities Struggle With Access to Green Energy Sources

In cities across the country, officials are faced with the task of getting renewable energy from the outskirts of town to the urban centers where demand is greatest. NewsHour correspondent Spencer Michels reports from Los Angeles.

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In Science and Jazz, Father and Son Find Common Bonds

By Arts Desk

It's just after closing on a Friday night at the Smithsonian Museum of Natural History in Washington. In the darkened auditorium, a jazz quintet is building a rhythmic floor on a soft, steady percussion line and lilting piano chords.

List of U.S. Nuclear Sites Mistakenly Released on Web

By PBS News Hour

The U.S. government admitted Wednesday to accidentally posting on the Internet locations of hundreds of civilian nuclear sites and details on their activities.

Stalagmites Provide Clues in Changing Rainfall Patterns

ITN's Channel 4 news correspondent Tom Clarke reports on what scientists are learning from stalagmites about the rainfall and changing weather patterns in a remote region of southwest Poland.

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China Appears to Tighten Internet Access Around Tiananmen Anniversary

By PBS News Hour

In the lead-up to the 20th anniversary of the Tiananmen protests on June 4, concerns over Chinese censorship of the Internet are running strong, although problems with unpredictable Web access and other matters are proving just as tricky.

Global Monitoring Systems Work to Confirm North Korean Nuclear Test Claims

By PBS News Hour

When North Korea conducted its second underground nuclear test in three years Monday, one of the first places in the world to register anything unusual was the National Earthquake Information Center in Denver, Colo.

Obama Pledges Increased Cybersecurity, Will Name Cyber Czar

By Admin, PBS News Hour

President Barack Obama unveiled a comprehensive plan to combat threats to the U.S. digital infrastructure Friday, including creating a new position to handle cybersecurity coordination.

World Leaders Condemn N. Korean Nuclear Test

By PBS News Hour

World leaders on Monday denounced North Korea's reported back-to-back nuclear and missile tests, which President Barack Obama said were a reckless challenge that will only invite more international pressure on the secretive regime.