means it comes from a source that doesn't run out. this energy will be around for as long as the earth is. in the future we will use wind, water and solar energy.
means to produce a copy of another living thing. in the future, scientists will use cloning to save endangered species from extinction.
is the ability of machines to think like humans and solve problems. if we keep creating intelligent machines, they will make our lives easier by doing all the hard work for us.