Cheap Fertilizer

Urine has a high nitrogen content, and wood ash is rich in calcium and magnesium. All of these nutrients are needed for vegetable growth.

Therefore, according to National Geographic, ash mixed with urine yields ~4 times more tomatoes than otherwise. Also, the fertilized tomatoes had significantly higher levels of magnesium, key for bone, muscle, and heart health.

The only thing the fertilizer did not do is improve taste - tomatoes were as tasty with or without fertilizer.

Eco-friendly ... sort of

Coral reefs have been damaged or are disappearing at an alarming rate - some estimates say as less than 30% of the world's coral is healthy.

To help, the 523 ft. USNS Gen. Hoyt Vandenberg, used during the Cold War, will be sunk off the coast of southern Florida to provide a platform for the development of coral. Coral is vital to the maintenance of a vibrant and diverse marine ecosystem. The warship's development of coral will also help shift tourists who dive from areas where the coral population is much more fragile.