The first successful heart pacemaker was implanted in 1958 — the patient lived to 86 and had 26 pacemakers total.

Moore's Law observed that transistor density on chips doubles approximately every two years — this held for roughly 50 years.

Nuclear reactors generate electricity by using the heat from controlled fission chain reactions to boil water and spin turbines.

The electric motor converts electrical energy into motion.

The world's first programmable computer, the Colossus, was built secretly in Britain during World War II to decode Nazi messages.

The original iPhone had less processing power than a modern dishwasher.

The telegraph enabled rapid long-distance messaging.

Iceland recycles nearly 100% of its energy from geothermal and hydroelectric sources.

The first computer virus, Creeper, spread across ARPANET in 1971 and displayed the message 'I'm the creeper — catch me if you can!'