- BBC Travel - By Amanda Ruggeri
Archaeologists have suspected there was more to Tikal, El Zotz and Holmul. But it wasn’t until recently that proof came – in the form of Lidar, a type of remote sensing technology. There is no path through...
As the number of COVID-19 cases creeps upward worldwide, countries ponder implementing new lockdown restrictions. With uncertainty over whether schools can safely reopen, here's how the American education system weathered the 1918 flu pandemic. Why examining the lingering effects some patients experience could help us better understand the coronavirus. Plus, how a mandatory virus vaccine policy could work.