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Earth's climate affects us in fundamental ways.
It's not just about how warm or wet you might feel.
It's about where you live, how you travel, what sort of foods
can be grown, and therefore, what you eat.
In fact, climate is a fundamental underpinning of
human existence.
Ours is a powerful species.
And ever since we arose some 200,000 years ago, humans have
been influencing our planet.
But over the last couple of centuries, our influence has
extended to the atmosphere as we've put excess greenhouse
gases into the atmosphere from the burning of fossil fuels.
And that has affected the climate system.
I invite you now to join my friend and colleague Professor
Lesley Hughes to investigate how Earth's climate system
works, how humans have influenced it, what the
implications of that influence are, and most importantly,
what can be done about it.
Thanks, Tim.
I'm Lesley Hughes.
I'm an ecologist in the Department of Biological
Sciences at Macquarie
University in Sydney, Australia.
About 20 years ago, I became interested in climate change.
And specifically, how climate change in the future could
affect the species and
ecosystems that I was studying.
Way back then, the term carbon footprint hadn't, I don't
think, even been invented.
And climate change certainly wasn't the hot political,
economic, and environmental topic it is today.
But over the last two decades, I've witnessed enormous
impacts of climate change already, not just on species
and ecosystems, but on the very fabric of this planet.
And over that time, I've become increasingly convinced
that there is simply nothing more important than
understanding and solving the climate problem.
I believe the very future of the human
race rests upon this.
This four part subject begins with a look at our future
climate and how it will affect the environment around us.
In the second module, we backtrack a bit, and look at
some of the science that underpins our understanding of
the future, what we know, and how we know it.
And how it sets us up to predict and
cope with future things.
In the third module, I'll tackle the multitudinous ways
in which climate change is going to affect our lives--
where we live, how we live, our health, what we ate, just
about everything.
And I'm warning you, by the end of Module Three, we'll all
be feeling a bit depressed.
But the one good thing about the fact that humans are
causing climate change is that if we've caused a problem, we
should also be able to fix it.
And in Module Four, I'll be looking at all of the ways in
which we can indeed fix the problem.
I firmly believe it's not too late.
We need to get going pretty quickly.
And thank you for joining me along the journey.