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What do we know about how the planet is going to end?

We know that the planet will be ending within the next century, that the human population is set to explode in the next few decades, and that there are more people on the planet than there are living at the moment.

But we don’t know what’s going to happen to the ecosystems that we depend on.

What are the most pressing threats facing our ecosystems and our species?

In the next issue of National Geographic, we’re going to get the answers to some of these questions and to find out what we can do to protect our planet.

And it’s the first time National Geographic has teamed up with National Geographic News to bring you this comprehensive look at what’s happening around the world.

How are ecosystems changing?

National Geographic: What are some of the big changes happening to our planet right now?

We’ll start with the ones that are most urgent: climate change.

It’s already affecting our ecosystems, from the oceans to our forests, but we can expect the effects to intensify over the coming decades.

The biggest change will be the melting of polar ice caps, which will mean a shift of the climate, which means a more powerful greenhouse effect.

This is what the new Intergovernmental Panel on Climate Change (IPCC) report on climate change has been saying for years.

The world’s oceans will become increasingly acidic, and their waters will become more acidic, too.

They will be more susceptible to the growth of bacteria and viruses, which can grow more quickly in the warmer ocean waters.

The rising levels of carbon dioxide in the atmosphere will also make the oceans more acidic.

The oceans will absorb more of the sun’s energy, creating more heat and making it harder for plants and animals to grow.

The rise in temperatures and the resulting changes in the climate are already taking place.

If you’re worried about the planet becoming more acidic in the future, think again.

The Earth has already become much more acidic than it was 100 years ago.

But scientists have only been able to measure the increase in carbon dioxide levels for the last 100 years, and we’re only starting to get a good sense of how much it’s actually changed.

Scientists think we’re still about 2.5 parts per million more acidic today than we were in the early 1800s.

That’s a pretty good improvement.

The reason the oceans are getting more acidic is because of the melting glaciers.

The Greenland ice sheet is melting, and the Greenland Ice Sheet, which covers more than half the Earth, is melting.

And that melting is causing the ocean to get more acidic at the surface.

This melting of the ice sheets is increasing the amount of water in the oceans, which is making them more acidic overall.

But that’s just one of the effects of the rising seas.

We know from satellite measurements that the sea level has been rising.

The amount of seawater that is being deposited in the ocean has increased, as has the amount that is going into the ocean.

Scientists say the amount is actually increasing faster than it is getting released back into the oceans.

In some places, the amount being released into the seas has doubled since 2000, according to data from the National Oceanic and Atmospheric Administration (NOAA).

In some locations, it’s doubled in the last 20 years.

In the last few years, the melting and the release of the sea water has accelerated the pace of global warming.

In Greenland, which sits just off the coast of North America, the ice sheet has already melted by more than 100 percent in the past 20 years, according the University of Washington.

Another thing that’s happening to the oceans is that the CO2 is being absorbed into the water, and this means it is more acidic as it moves into the atmosphere.

This will have a cascading effect on our ecosystem.

These are all major changes, but what are the big risks?

In addition to changing the ocean and changing our ecosystems in general, a lot of the changes we’re seeing in the world are caused by humans.

It used to be thought that human activities had a big impact on our planet, because of all the waste we produced and all the damage we caused to the environment.

But now we know that we’re responsible for more than 50 percent of global CO2 emissions.

In fact, our emissions are now more than double what they were in 1990, and even before that, because we didn’t curb emissions fast enough.

There are a lot more people living in the United States today than at any other point in human history.

We are a globalized society, and when we think of what it means to live in the 21st century, we think about our impact on the Earth.

Our pollution is already affecting the Earth’s climate, and our dependence on fossil fuels and our consumption of energy and products like oil and coal is putting it at risk.

We also know that climate change is going through a major transformation, and it’s affecting