Science

Huge DNA code of the Christmas tree being revealed
To millions of people, the Christmas tree is a cheerful sight. To scientists who decipher the DNA codes of plants and animals, it's a monster.
After nearly a year circling the moon, NASA's Ebb and Flow will meet their demise when they crash — on purpose — into the lunar surface.
The world's most popular online mapping system returned late Wednesday with the release of the Google Maps iPhone app.
In our letters segment this week, a professor mentioned that the Minnesota River Valley is home to 3.6-billion-year-old rocks, some of the oldest rocks on earth. We follow up on why that would be and what they signify about Minnesota's past and future.
With Spaceport America nearly complete but still mostly empty, a Virgin Galactic official says the company will reassess its agreement if New Mexico lawmakers don't pass liability exemption laws for its suppliers.
Distant galaxy regains title as oldest in universe
A galaxy once considered the oldest has reclaimed its title, scientists reported Wednesday.
Air Force sends mystery mini-shuttle back to space
The military's small, top-secret version of the space shuttle rocketed into orbit Tuesday for a repeat mystery mission, two years after making the first flight of its kind.
Minn. researchers launch citizen science project "Snapshot Serengeti"
A new online project by the University of Minnesota College of Biological Sciences asks "citizen scientists" to help researchers learn more about Serengeti wildlife.
The best astronomical stories of 2012
This year was full of significant astronomical discoveries. Two experts will join us to talk about the biggest astronomical breakthroughs of 2012, including Alpha Centauri's orbiting planet, Curiosity and black holes.
Scientists discuss link between climate change and severe weather
From the Climate One series at the Commonwealth Club of California, three climate scientists who were part of a UN report on severe weather around the world discuss the links between burning fossil fuels and severe storms and drought.