1
Almost a million birds of a single species have been wiped out.
2
Weird things happen near black holes...
4
"It's about five Hiroshima bombs of heat, every second, day and night, 365 days a year."
5
No wonder he couldn't crack it open.
6
Those aren't just rocks.
7
It could be the oldest crater on Earth.
8
We need a new vaccine.
9
Hold on to your hats.
10
This simple timeline explains the spread of the new coronavirus.
