Have you got a big birthday coming up, one that ends in a zero? And have you made any major life decisions recently? Although we measure time using a continuous scale, research has shown that in the year before a milestone birthday, people are more likely to reflect on their lives and make significant changes.
What were you doing at 3:19am Tuesday 27 January? That’s when a huge asteroid passed within 1.2 million kilometres of our planet. Fortunately that’s about three times the distance to the moon so we weren’t in any danger. But how often do rocks from space actually collide with Earth? And what happens when they do?
Most animals do it. You’ve been doing it since before you were even born. And it’s quite likely looking at these photos has made you do it now. Yawning. But why do we yawn and why is yawning so contagious?