Part 2 of the explanation about the accelerating spin of the Earth - which is against the trend of the last one-and-a-half billion years.

Part 1 about how the Earth is unexpectedly speeding up, and has recorded its shortest day ever – 1.59 milliseconds shorter than the standard 86,400 seconds

Electricity supply is shifting to renewables, so batteries are important. It might even be cheaper to power your house with the battery from your electric car, rather than batteries specifically designed for houses.

Nose-picking is something that people find disgusting—yet we still do it.  And how about the gunk that’s in your nose—is it ok to eat that?

The highest standard for measuring body temperature is via a heart sensor—after that, it's from inside a body cavity; and you can do it from inside the mouth or the ear, but that's not as accurate, and even less so when measured on the skin. Measuring brain temperature is different again—and be astonished that the temperature of the human brain differs from the rest of the body.

Have you ever been winded? You suddenly lose the ability to do something you've done 15 times each minute of your life. It's one part anatomy, one part physiology, and one part don't panic.

Dogs tend to hang around humans but do they really love us—and what’s with the head tilt? Their affability might be due to two genes known to influence sociability in mammals. Gradually genetics turned dogs and humans into best friends.

Measles is a nasty infection that you don't want to get. It can cause death and, what's more, it can also erase your immune system's memory. Only relatively recently scientists have measured this directly - by concentrating on antibodies – which can be generated by natural infection, and by vaccines.

Anticipation is a strange experience. It can take you all the way from hope and trust, to anxiety and fear. But there’s a happy balancing point where anticipation can enrich your life.