Deep-water corals also bleaching badly
Almost a quarter of corals damaged by heat spikes.
Even the deep-water corals of Australia’s Great Barrier Reef are not safe from the damaging effects of rising ocean t...
Why is the sea salty?
The water on the Earth’s surface was once fresh.
It is estimated there is enough salt in the world’s oceans to cover all the planet’s land surfaces with a layer about...
Why are there two tides a day?
In most places on Earth, there are two high tides each day.
It’s early January, and the Sun is blazing. Sweltering in the hottest week of the past 100 years, temperatures well a...