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TIL that the most successful hunter in the animal kingdom is the dragon fly which catches 95% of the prey it pursues (compared to owls, hawks, and falcons 25% success rate). This is due to an impressive suite of evolved adaptations that have remained largely unchanged since the Permian age.

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9L4G TIL: The expiry date on water bottles is when chemicals from the plastic bottle leaks into the water
N7rWN TIL that the interstellar travels of Voyager I and II were only possible due to a specific planetary alignment that only occurs every 175 years. The position of the 4 outer planets enabled a slingshot move which greatly increased the crafts speed.
WKrd TIL Iran has the highest female to male ratio in universities among all sovereign nations. More than 70% of students in engineering and pure sciences are women.
ZpMJR TIL that Spitting Cobras emerged in the fossil record around the same time as early humans. It is speculated that the reason these snakes spray venom is because of the pressure humans in particular put on them. The spraying of venom from a distance countered the humans' use of projectile weapons.
wm46 TIL you could stop both the original and the current Green Lantern with a #2 pencil.