SpaceX unmanned spaceship splashes down near Southern California

An unmanned Dragon spaceship splashed back to Earth on Tuesday after a successful supply run to the International Space Station but its owners were forced to scrub the launch of an important weather satellite on the other ...

Good news and bad news for coral reefs

Some good news for coral reefs: In 2014, President Obama expanded the Pacific Remote Islands Marine National Monument in the central Pacific from about 87,000 square miles to 308,000 square miles. The Monument "is the largest ...

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