What I did: Read up on an article about crops growing on Mars like soil.
What I learnt: Crops can grow on soil with "Mars's soil" conditions, with no dangerous metals. This is astounding in terms of astronomy. This could mean space exploration could be made more possible. It relieves the need for food on space missions to Mars now. This is a great step forward.
Summary: Many things are possible, they've just yet to have been discovered.