What with Trump, and climate change, and Brexit, and Putin, and post-truth, and homelessness, and a million other problems to worry us, it’s easy to let it all get you down. Fear not: the Friday blog is here to rescue you from the doldrums. Take a look at this picture and feel the wonder course through your veins.
This is a lake of ice, it’s bigger than the London Orbital, it’s a mile deep at its centre, and it’s on Mars. And if that doesn’t set your pulse racing, you don’t have one.