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

2) The #MeToo movement, originating in 2006 and gaining widespread attention in 2017, raised awareness about sexual harassment and assault, encouraging survivors to share their experiences and promoting discussions on consent and gender equality.

3) The world's largest species of shark, the whale shark, can reach lengths of up to 40 feet (12 meters) and weigh over 20 tons.

4) The first modern health insurance policy was introduced in Germany in the late 19th century.