1) The coldest known temperature in the universe was achieved in a laboratory in 2019, reaching a fraction of a degree above absolute zero (-273.15 degrees Celsius).

2) The recent increase in cyber attacks, including ransomware attacks targeting critical infrastructure, businesses, and individuals, has highlighted the importance of cybersecurity measures and the need for enhanced protection against evolving threats.

3) The Arctic Ocean is the smallest and shallowest ocean, located at the North Pole. It is covered by sea ice for much of the year.

4) Male seahorses are the ones who give birth to their offspring.