Related Images Gallery

Aerial view of the Twin Towers of the World Trade Center Construction

Aerial view of the Twin Towers of the World Trade Center during its construction in lower Manhattan, New York City, 1971. (Photo by Carsten/Three Lions/Hulton Archive/Getty Images)
The iconic twin towers of downtown Manhattan's World Trade Center were completed in 1973. They stood at 110 stories each, accommodating 50, 000 workers and 200, 000 daily visitors in 10 million square feet of space. They were the hub of the bustling Financial District, a top tourist attraction and a symbol of New York City's?and America's?steadfast devotion to progress and the future

Danse Macabre

La Danse Macabre. Coloured engraving of adance of death. The medieval engraving comprises agroup skeletons dancing and playing musicalinstruments. These images were religion-based, asan allegory on the universality of death. Takenfrom The Book of Chronicles, by Hartmann Scedel, published in Nuremberg, Germany, in 1493

© Sheila Terry/Science Photo Library

Epilepsy

Epilepsy. This abstract artwork, based on a patient's description of what an epileptic seizure feels like, shows lightning inside a human brain against a background of nerve cells. The large shaft of lightning runs along the end of a nerve cell and across the gap (synapse) to another cell. The pink spheres spreading across the gap are neurotransmitters, the chemical messengers that carry an impulse from one nerve cell to the next. Epileptic seizures are caused by chaotic electrical activity in the brain. Attacks can be triggered by a variety of factors, such as illness or stress, although the underlying cause is not understood

© John Bavosi/Science Photo Library