On June 30, 1908, a blast rocked Siberia — flattening 800 square miles of forest. No crater. No impactor. That same day, Tesla was testing his wireless energy transmitter. Did he trigger one of the ...

The asteroid that struck the Earth 66 million years ago devastated life across the planet, wiping out the dinosaurs and other organisms in a hail of fire and catastrophic climate change. But new ...