Once seen as almost impenetrable, Russian air defenses are now under growing strain from Ukrainian drones. A recent attack on Moscow has reignited debate over Russian vulnerabilities. Ukrainian drones ...

The Czech government has approved a bill to put the funding of public service media under direct political control. Critics warn that if passed, the bill would put a pillar of Czech democracy at risk.

This video explains the stages of mitosis, contrasts them with meiosis and the creation of haploid gametes, and concludes by ...