Cool Facts are quick hits of new human and world science curated into short bursts of information just for you. This fun compilation publishes one Friday a month. Enjoy!Here’s the current lineup for episode #11:Hyperbaric oxygen treatments could make your blood cells grow younger.Infection-fighting immune cells in your brain get their training in your gut.Reprogramming T-cells to act like stem cells helps your immune system.What happens in the womb changes genes through mom's epigenetics.Self-watering soil could expand farmable land and reduce water used in agriculture.