Ask HN: Greatest science and tech accomplishments of the 21st Century?

I have some homemade paintings of planets and a rocketship in my son's room and am thinking I want to add to them some representations of recent science and technology accomplishments. Can HN help me make a complete-ish list of 21st Century science and technology accomplishments? What I have so far:

Felis Baumgartner's high jump, Burt Rutan's SpaceShipOne, SpaceX's Dragon capsule docking with the ISS, James Cameron's Marianas Trench dive, the discovery that Neanderthals and modern humans are genetically related, the Curiosity Mars rover, understanding genetic resistance to HIV/AIDS, other stuff?

Thanks in advance.