If you take a video of a spinning wheel, you’ll probably notice that the spokes appear to turn more slowly than the wheel is actually rotating, and sometimes in the wrong direction. This is caused ...

Light does more than illuminate the world—it can also push and twist matter. It was back in the 1870s that James Clerk ...

Burundi nominated former Senegal president Macky Sall for UN chief, but Africa's backing for him has fractured. AU procedural ...

The apocalyptic red skies in Western Australia have generated considerable international media attention. Crimson dust whipped up by the strong outer winds of Severe Tropical Cyclone Narelle created ...

Colour vision is an integral part of the human visual system. It relies on the presence of three types of cone photoreceptor in the retina, which have different but overlapping wavelength tuning ...