Latest sunsets follow summer solstice | | Your exact date of latest sunset depends on your latitude. The latest sunsets for 40 degrees north latitude are happening now. Meanwhile, in the Southern Hemisphere ... latest sunrises for 40 degrees south latitude are happening now. Read more. | | |
US revamps volcano early warning system | | There are 161 active volcanoes in the United States, more than a third of which have been classified as posing a high threat to nearby communities. A new law aims to improve volcano monitoring. Read more. | | |
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What we're reading The water future of Earth's 3rd pole | | Himalaya. Karakoram. Hindu Kush. The names of Asia's high mountain ranges conjure up adventure for us living far away. But - for more than a billion people - these are the names of their most reliable water source. | | |