Our lives are made possible by a delicate ecosystem. We rely on our forests and plants to create oxygen. We rely on bees and other creatures to pollinate the plants that produce our food. We rely on coral reefs to sustain our fish. On birds and bats to control insects. On wolves and other predators to control rodents. On glaciers to provide much of the water we drink.

We like to think of ourselves as stewards of the planet’s ecosystem. But instead, we are its greatest threat.

There are now more than 8 billion humans on planet Earth, all of which demand water, food, housing, and energy. More and more, they also demand a life of convenience, travel and recreation. One in which the niceties require resources. But after a single use, many of the products we use become disposable. As a result, we are rapidly destroying our oceans, our rainforests, and the air we breathe.

Obviously, this places our entire population at risk.

Scientists tell us that our lifestyle and our reliance on fossil fuels are heating the atmosphere. That they’re melting our glaciers at an astonishing rate. That they’re causing extreme wildfires and increasingly damaging storms. And that they will result in the extinction of more than a million species in the coming decades. The very species on which we rely to sustain life.

Yet our politicians, corporations, some religions, and many of our neighbors are in denial of the obvious dangers. They have placed political power over science. Short-term profits over the future. Ignorance and fantasy over reality.

This simply cannot continue. Scientists and activists have created a Climate Clock to show us the time to act is quickly running out. We can prevent the coming catastrophe if we treat climate change as the crisis it is. But once the ecosystem has been destroyed, we will not be able to fix it. And, contrary to the beliefs of some, we are unlikely to find planet B. Even if we could, we would not be able to transport more than a tiny fraction of our population to it. Moreover, we’d quickly destroy that planet, too. Better that we take care of the one we have.