The Doomsday Clock has never been closer to metaphorical midnight. What does it mean?
The Doomsday Clock now stands at 89 seconds to midnight, the closest to catastrophe in its nearly eight-decade history.
BBC2y
The 12 and 24 hour clock
A clock with hands (an analogue clock) shows us the numbers 1-12. There are 24 hours in one day, so we measure time by splitting the day into two halves. The first 12 hours of the day, from ...
CBS News6d
Doomsday clock set at 89 seconds to midnight, closest ever to "global catastrophe"
The Doomsday clock was set at 89 seconds to midnight on Tuesday morning, putting it the closest the world has ever been to what scientists deem "global catastrophe." The decades-old international ...
Nature1y
The Molecular Clock and Estimating Species Divergence
What is the molecular clock? Levels of molecular variation could be used, in principle, to estimate divergence times, serving as evolutionary "clocks" that "tick" at different rates. Subsequent ...
BBC2y
The 12 and 24 hour clock
A clock with hands (an analogue clock) shows us the numbers 1-12. There are 24 hours in one day, so we measure time by splitting the day into two halves. The first 12 hours of the day, from ...