After the International Space Station, what comes next?

Operations on the International Space Station will come to an end in 2030. What's next? Plans are for privately owned, commercially operated space stations.

Hurricane Gabrielle strengthens to Category 4

Hurricane Gabrielle has strengthened into a Category 4 storm. It’s 330 miles (530 km) northeast of Bermuda. Those in the Azores should monitor its progress.

How many stars can you see on a moonless night?

Have you ever wondered how many stars are visible on a given night? It all depends on how dark your sky is, what your age is, and other limiting factors.

Supernova 1181 was described in an ancient Arabic poem

Researchers discovered new evidence of Supernova 1181 in an ancient Arabic poem praising the 12th century military leader and politician Saladin.

Artificial photosynthesis breakthrough! Solar fuels to come?

Scientists have developed a new molecule that might bring artificial photosynthesis - and clean, sun-powered fuels - a step closer.

Afghanistan earthquake: Impassable roads, inclement weather

The Taliban, which rules war-torn Afghanistan, has asked the world for help with recovery efforts following Sunday's 6.0-magnitude Afghanistan earthquake.

Sudan landslide flattens village, leaves uncertain death toll

There are conflicting reports of the death toll today, following Sunday's Sudan landslide in the remote Marra Mountains. But it appears hundreds are dead.

Sapphire: September birthstone comes in many colors

Sapphire, the September birthstone, is typically blue, the color caused by small amounts of titanium and iron in the crystal structure.

Labor Day: Learn its history and traditions

Labor Day is a federal US holiday that falls on the first Monday in September and is considered the unofficial end of summer.

Hurricane Katrina retrospective: 20 years after the storm

It is the 20th anniversary of Hurricane Katrina, one of the deadliest and costliest hurricanes to ever impact the United States.

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