That’s really two questions – thankfully one is a lot easier to answer than the other…
There’s no such thing as a stupid question. There really isn’t, so we’ll attempt to answer yours for you now – in as fun a way as possible.
There are a lot of different kinds of renewable energies – so many in fact – that it would be quite impossible to explain all of them. So what we’ll do is simply mention a few and then address the whole ‘eating’ issue later.
In the old days, we used to get all our energy from oil and coal. There was so much of the black stuff, locked away in the ground, we thought it would last forever. When the Industrial Revolution hit the world, we all went a bit mad for fossil fuels – until things started to get a bit smoggy.
You see, although it was super fun blowing holes in mountains and smashing up the land for oil, it turns out that we were actually hurting the planet a little bit in the process. Unfortunately, it took us a little while to come round to this. The Industrial Revolution was a bit of a crazy time, when captains of industry were being raised from the slums of the world and grabbing opportunities with their grubby mitts.
“Why were their mitts so grubby?” You ask?
Well, they were both literally and metaphorically grubby. The literal part came from the actual coal and oil that why were forever rubbing on their hands (because that’s how you test for good quality fossil fuels) and the metaphorical part from the underhand, cowardly tactics they used to make more money at the expense of the planet’s well being and people’s lives.
Back in the time of this Industrial boom, a lot of kids were used to do jobs that were dangerous and damaging to their health. If an indigenous tribe was sitting on a huge oil reserve, the businessmen would think nothing of pushing them off the land or just killing them.
Of course, things like this still happen today, but less so, thanks to lovely renewable energy!
“Wait a second, are you saying that renewable energies are stopping murders?”
Yes! Absolutely. The use of renewable energies is actively stopping murders on a daily basis – however it’s not stopping the proliferation of child workers. That will always continue.
At some point after the Second World War and the Cold War had blown over (in the 60s or something) people started to question the amount of harmful gases and fuels that we were using. Some scientists (supported by a contingency of people with long hair and drug habits) pointed out that we might actually run out of lovely black oil at some point, so maybe it would be a good idea to look into different ways of making energy.