Dozens of stones up to 300 kg in weight are traveling for hundreds of metres across a dried lake in America. But no one's ever seen them do it. So, what's making these Death Valley 'sailing stones' move?

With an estimated birth year of 1832, Jonathan was alive for the invention of the safety pin, the telephone, and the roller coaster. Here, he is photographed in 1902 and today, on the South Pacific Island of Saint Helena.

Look at him, he's so ashamed! Meet the shame-faced crab, a large, tank-like species native to the Indo-Pacific region. Chin up, little man!

The Philippine eagle (Pithecophaga jefferyi), also known as the monkey-eating eagle, is found exclusively in the forests of the Philippines. It has brown- and white-coloured plumage, and a shaggy crest, and generally measures 86 to 102 cm (2.82 to 3.35 ft) in length, weighs 4.7 to 8.0 kg (10.4 to 17.6 lb), and has a 2 meter wingspan. It is considered the largest of the extant eagles in the world in terms of length and wing surface.

Among the rarest and most powerful birds in the world, it has been declared the Philippine national bird. Unfortunately, however, it is critically endangered, mainly due to massive loss of habitat resulting from deforestation in most of its range. Killing a Philippine eagle is punishable under Philippine law by 1 ...

The Eighty-Eight Butterfly ( Diaethria anna) is named for its awesome numerical markings.

This leaf-rolling weevil has made the meticulously rolled nest it's standing on without silk or adhesives, simply by using cuts, crimps and creases.

Li-Fi is a wireless technology that transmits high-speed data using visible light communication and will be available in the coming months. With scientists achieving speeds of 224 gigabits per second in the lab using Li-Fi earlier this year (that's equivalent to 18 movies of 1.5 GB each being downloaded every single second), the potential for this technology to change everything about the way we use the Internet is huge.

Scientists have now taken Li-Fi out of the lab for the first time, trialing it in offices and industrial environments in Tallinn, Estonia, reporting that they can achieve data transmission at 1 GB per second - that's 100 times faster than current average Wi-Fi speeds.

The technology uses Visible Light Communication, a medium ...

Crows in Japan drop nuts on crosswalks to be crushed by cars—the nuts are retrieved when the lights turn green.