Don't worry about it. Humans always predict the worst. 60 years ago people were genuinely scared that there might be an atomic war at any moment. 40 years ago we were told that AIDS would kill off huge numbers of people. 25 years ago I remember BBC news telling us that mad cow disease might decimate the population within a decade. Then it was terrorism, now it's climate change.
Humans need something to worry about, it is in our nature. It's also convenient for the powers that be because they can use whatever fear people have as an excuse to raise taxes and cut services.
The world is hotter than a century ago, certainly. But before industrialisation temperatures were already rising, ever since the peak of the "mini ice age" where the Thames regularly froze solid to the point they held fairs on the ice. Go back a thousand years and temperatures were about the same as they are now.
The point is temperatures have always fluctuated and the world has adapted to the new conditions. Yes, people die off and populations rise and fall. We are due a correction in population figures because there are too many people for the planet to support. Natural disasters such as floods and famine will help bring about the necessary reduction (because obviously politicians can't actively promote sterilisation or genocide). But that's always been the case, that's how we evolve - the people who adapt best to the prevailing conditions are the ones who survive.
The problem with those who shout that we need to stop climate change are misguided. It's the height of arrogance to think humans have the power to change nature.