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The Mars rover Curiosity is exploring the surface of the Red Planet in the Gale Crater, and it is also tweeting about its mission. The rover has a distinct personality, albeit one made by the strokes on a keyboard from the Jet Propulsion Lab in Pasadena, Calif.

The USGS wants to test if butterflies and other insects are being hurt by contaminants, such as those in pesticides. It's seeking specimens from Alabama, Georgia, Kansas, Nebraska, Oklahoma and Texas.

The 6 winners include a job app for out-of-work youth, radio shows that talk about sex and love and a solar lamp you can pay off in tiny increments.

Since touching down in Jezero Crater, NASA's Perseverance rover has already cached 6 samples that could one day be brought back to Earth. Astrobiologists hope they hold signs of past microbial life.

A dock washed away by the March 2011 natural disaster landed on an Oregon beach this week. It is 66 feet long, 19 feet wide and 7 feet tall.

The answers involved career choices, sleep habits, dog greetings — and bologna eating (although to be fully transparent, we must note that was a quirk shared by an uncle and his niece).

NASA's James Webb Space Telescope is waiting at its launch site, after years of repeated delays and cost overruns. At one point, the giant new observatory was threatened with cancellation.

Ahead of a trip to China, Calif. Gov. Jerry Brown talks to David Greene about President Trump's decision to withdraw the U.S. from the global climate deal. Brown says the decision is a mistake.

Japan's guard says 10 of the 26 people aboard a tour boat that sank in the frigid waters of a northern national park have been confirmed dead.

Biomedical engineer Joe Dituri has broken the record for longest time spent living underwater without depressurization. He talks about what he's learned so far.