Century-Old Blast still a Mystery
[dropcap]I[/dropcap]n 1908, a colossal blast incinerated a swath of wilderness deep in Siberia, at about the same latitude as Anchorage. The explosion that July day registered on seismic recorders all over the world. Within minutes, 80 million trees lay flat and scorched in a circle 60 miles wide. Scientists calculated the shock was more than […]