The tallest wooden building in the world, Brock Commons in Vancouver, has 18 stories and uses mass timber construction.

Blockchain technology underlies cryptocurrencies but is also used for supply chain tracking and secure voting systems.

The wind turbine converts wind into electrical energy.

The Eiffel Tower grows about 6 inches taller in summer due to thermal expansion of the iron.

Airplane black boxes are painted bright orange for visibility.

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

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

The Chunnel carries both passenger and freight trains.

The telephone enabled long-distance voice communication.