The Moon isn’t supposed to have oxygen or liquid water, so how can it be rusting? Rust is formed when iron meets water and oxygen. Water provides the catalyst that enables iron and oxygen molecules to react with one another and form the particular type of iron oxide known as ‘haematite’ or, more simply, as ‘rust’. But did these elements end up on the Moon? BBC Weather journalist Sophia Herod explains. | BBC News India

How quickly can a drowning happen? Faster than most people realize. A child can slip under the water in as little as 20–60 seconds. And it doesn’t look like what you see in movies. There’s no dramatic splashing. No yelling for help. No big scene. Drowning is often silent. It can happen when adults are nearby. It can happen during non-swim time. It can happen in backyard pools, at parties, on vacation, or even in shallow water. Within about 4–6 minutes without oxygen, the risk of brain injury beg