The internet connected computers across the world.

The '@' symbol was chosen for email addresses because it was the least-used character on keyboards at the time.

3D printing (additive manufacturing) was invented in the 1980s — early machines cost hundreds of thousands of dollars.

GPS exists because of Einstein’s theory of relativity correcting time differences.

YouTube was originally a dating site before pivoting to general video sharing in 2005.

Photography was originally called 'sun painting' — the word comes from Greek for 'light writing.'

The computer transformed information processing.

Solar panels are made from silicon wafers and convert sunlight into electricity through the photovoltaic effect.

The camera allowed images to be captured and preserved.