Some of the world's richest internet entrepreneurs, including Facebook boss Mark Zuckerberg, have awarded 11 disease researchers $3m (£1.9m) each.

Oceanic whitetip sharks return home to protected Bahamas waters, surprising scientists.

The widely-used insect repellent Deet appears to be losing its effectiveness against mosquitoes, scientists say.

UK scientists exploring the ocean floor in the Caribbean discover an "astounding" set of hydrothermal vents, the deepest in the world.

A royal penguin is being cared for at a Wellington Zoo after washing up on the coast of New Zealand, 2,000km (1,240 miles) from its Antarctic home.

Invasive alien species pose a greater risk to Europe's biodiversity, economy and human health than previously thought, a report concludes.

A glow-in-the-dark shark scares off predators with the help of "lightsaber-like" spines, a study suggests.