Someone has created a leaf out of chloroplasts which is a high concentrate of chlorophyll. It creates oxygen by taking sunlight and water and turning it into oxygen.
We can inhabit Mars, but only After we have built up an atmosphere and heat up mars's surface so that all the river beds will be filled by the melting ice caps.
Mars is superior to other planets like Venus because rovers have actually found remnants of water on Mars. This makes scientists think that water could have been on the planet of Mars a few millennium ago.
Many scientists have studied our DNA and they found that we could actually print our home and they could hitch a ride on a spacecraft although scientists do not no how to regrow our skin and all the other things that are on us it still is pretty cool to think about.