Mary Halton, for the BBC:
Researchers have found evidence of an existing body of liquid water on Mars.
What they believe to be a lake sits under the planet’s south polar ice cap, and is about 20km (12 miles) across.
Previous research found possible signs of intermittent liquid water flowing on the martian surface, but this is the first sign of a persistent body of water on the planet in the present day.
While we’re looking for a new home, Earth is currently experiencing a “Shit! There goes the planet!” moment, as writes Jane Dalton:
Humans are using up the planet’s resources so quickly that people have used a year’s worth in just seven months, experts are warning.
And the rate at which we are consuming the Earth’s natural resources is still speeding up.
This year the annual date when people have caused a year’s worth of ecological damage – Earth Overshoot Day – comes two days earlier than last year.
It falls on August 1 as calculated by Global Footprint Network, an international research organisation that observes humanity’s use of materials such as food, timber and fibres, as well as carbon emissions from burning fossil fuels and the environmental damage caused by building infrastructure.