Will you see thousands of meteors during the 2017 Leonid meteor shower? Doubtful. But you might see a sprinkling of meteors before dawn November 17 and 18.
More than 15,000 scientists in 184 countries have signed a letter urging the world to address major environmental concerns. "Soon it will be too late to shift course away from our failing trajectory, and time is running out."
A heatwave in 2011 killed off seagrass beds in Shark Bay, Australia. Now, scientists have discovered that tiger sharks are helping the ecosystem recover.
At first this looks like a cube floating in space ... but look again. It’s a wooden platform with great blue heron perched on the corner, reflecting in the glassy water. John Entwistle captured this image on a foggy morning last week at the Manasquan Reservoir, New Jersey.
Leonid meteors are few and far between in the evening because their radiant point - in the constellation Leo the Lion - is below the horizon then. Instead, watch for them between midnight and dawn.
