This is what the grooves of a vinyl record look like under an electron microscope.

Although it may look perfectly round from Earth, the Moon isn’t a sphere. New research suggests that because of the way it was formed it’s more like a lemon, with a bulge in the middle.

It's official: a deep-sea octopus has broken the world record for time spent defending her eggs. After 4.5 years, they've finally hatched, so someone pass Octomum eight glasses of wine - she's earned them!

Doctors bow in reverence to cancer victim, Liang Yaoyi, in China. Nine-year-old Liang died from a brain tumour and donated his organs because, "There are many people doing great things in the world. I want to be a great kid too." What an incredible person.

Dallol in Ethiopia is not only the hottest inhabited place on Earth, it's also one of the weirdest. Between 1960 and 1966, the average annual temperature was a toasty 35°C (96°F), but the temperature can regularly creep to over 46°C (115°f).

At 48 metres below sea level, Dallol is Earth's lowest land volcano, and its last recorded eruption was in 1926. Its craters contains hot springs that boast a whole range of otherworldly colours - including neon yellow - thanks to the hot magma bubbling below the surface. This magma heats the groundwater that flows into the area from the nearby highlands, and as the heated groundwater moves up towards the surface, it dissolves salt, sulphur, potash and other minerals and deposits them in the Dallol crat ...

Described as the first “truly feasible” contraption to reduce ocean plastic, this little wheel has been clearing rubbish out of Baltimore's harbour since May.

Called the Tree of 40 Fruit, this tree produces an array of stone fruit varieties including plums, peaches, apricots, nectarines, cherries and almonds, every year. Sixteen of these trees are now growing in the US.

This hefty guy is the giant horned caterpillar of the royal walnut moth (Citheronia regalis) from North America. These caterpillars can grow to a whopping 15 cm (6 inches) long!