technology

Airmail navigation concrete arrow

Scattered across American deserts, plains, sometimes fields, sometimes in the middle of nowhere: giant arrows made from concrete. The mysterious arrow signs were kind of forgotten for some time, but recently explorers rekindled their for discovering more and more of the arrows all over the United States.

Mousetrap with a gun

Ever since humans transitioned from hunter-gatherer society to agriculture, they had to learn to overcome food storage issues. Mold, fermentation or pests could destroy one’s grain. Lack of solutions sometimes resulted in famine. Civilization came up with many ideas for fighting rodents considered as pests: house mice, rats and others. Cats were domesticated over 9,000 years ago, and archeological findings suggest that they were used for pest control in Egypt

PewDiePie

As of 2019, data centers consume about 2% of global electricity. According to Swedish KTH Royal Institute of Technology, the internet uses 10% of the total electricity consumption worldwide. How much of that is consumed by Youtube? After Netflix and embedded videos, Youtube is the third biggest global internet bandwidth eater.

Server room

You know how smartphones sometimes get really warm after an hour of web browsing, right? And how laptop’s fan is howling on a warm day, spouting hot air from the vents. In a powerful gaming PC heat is an issue. Computers produce heat, but can a computer heat up a room? A Reddit user did some serious maths

Google Maps mobile phone

Is it true that GPS receivers in consumer grade devices automatically disables itself when it suspects it’s being used in advanced weaponry? It definitely seems so. The limits set by CoCom were established: anything faster than 1,000 knots (1,900 km/h or 1,200 mph) or higher than 59,000 feet (18,000 m) was regarded as a weapon. Most likely, an intercontinental ballistic missile.