In Japan, there is a hotel staffed almost entirely by robots, including a dinosaur robot at the front desk.

The smartphone combines communication, computing, and media functions.

The thermos (vacuum flask) was invented by Scottish physicist James Dewar in 1892 and later commercialized.

Bluetooth is named after Harald Bluetooth, a 10th-century Danish king — the logo combines his initials in runic letters.

The lithium-ion battery, now powering billions of devices, was developed in the 1970s–80s by researchers including John Goodenough.

The first computer virus was created in 1983 as an experiment — it spread via floppy disks and was called 'Elk Cloner.'

An astronaut's suit for spacewalk (EVA) costs approximately $12 million.

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

The refrigerator allowed long-term food storage.