1. Cancer- More Cannabis research, as well as testing out new things. Many Cancer patients are told that they are inoperable, and that treatment is helpless. I'm sure it wouldn't be hard to find cancer patients to test new rainforest plants and research chemical effects on their cancer, as long as regular human tests were done first.
2. World Hunger- GMOs are hated on like they are straight up poisons, all GMO means is "Genetically Modified Organism", which can range anywhere from a plants genetics being manipulated to produce more seed or fruit, to splicing the DNA of a jelly-fish into the genes of a pig. While it is true we shouldn't be putting corn on the market that has jelly fish DNA, or that produce their own pesticides. It is also true that if used properly, GMOs could solve the worlds food shortage, and actually give us a surplus.
3. Help Africa- We need to write history books, philosophy books and more that AREN'T meant for 1st world English students. Then we can begin to educate the world about itself. I am friends with a Nigerian who works for the government, and he said he never took a history class his entire educative career.
I was watching an idiot abroad, and it only costs around $700 to build a little house for a family in Africa... I don't see why it's not solved yet.
4. Discovering New Species- This goes hand in hand with Africa, World Hunger AND Cancer research. The Rainforests of the world need to be searched for new species of plants for cancer research, as well as new species that may be able to be bred with or spliced into the plants we currently use to make them have higher yields or more/less seeds, which in turn helps world hunger.
RE#1: Have you ever seen Burzynski? We have had a straight up cure for cancer for some time.
Though I wholeheartedly agree with you on Cannabis research--it does not end at medical. Cannabis is the solution to our food, energy, paper, and numerous other problems all in one. Industrial hemp produces more ethanol per acre than any other known plant on Earth. It can also be grown anywhere (does not need to displace current food crops) as can be garnished from it's affectionately given name "weed." It produces 4 times the amount of paper per acre than trees, and it does in 1/20th of the time (it takes 20 years for a tree plot to regrow, hemp can be done at least once per year). It is also one of the best known super foods. Cannabis also has over 60 cannabinoids, and with what little research has been done, we have found that over 40 of them have beneficial medical properties.
RE#2: I'm fairly certain GMOs are evil all around--as it's been proven that eating food with a modified DNA can actually alter your own DNA as well. The long term effects of this are astronomical obviously. Unfortunately GMOs are one of the things once taken out of the bottle, they cannot be put back in. As the GMO plants then produce with normal plants, and their offspring is forever with us.
The last 2 points I could really care less about. If you're into helping Africa, why not South America?
And if you're into exploration and finding new species...why no mention of the ocean? We know more about the moon than we do about our oceans.