Every other species on Earth reaches a maximum population after a time.
The number that can be sustained on the natural resources available.
With nothing to restrict us, our population has been growing dramatically throughout our lifetime.
On current projections, there will be 11 billion people on Earth by 2100. But it's possible to slow, even to stop population growth well before it reaches that point.
In 1950, a Japanese family was likely to have three or more children. By 1975, the average was two. The result is that the population has now stabilized and has hardly changed since the millennium.
There are signs that this has started to happen across the globe. As nations develop everywhere, people choose to have fewer children. The number of children being born worldwide every year is about to level off. A key reason the population is still growing is because many of us are living longer. At some point in the future, the human population will peak for the very first time.
The sooner it happens, the easier it makes everything else we have to do.
Working Hard to Raise People Out of Poverty
Giving Everyone Access to Healthcare
Enabling Girls to Stay in School As Long As Possible
Climate scientists had warned that the planet would get warmer as we burned fossil fuels
and released carbon dioxide and other greenhouse gasses into the atmosphere.
A marked change in atmospheric carbon has always been incompatible with a stable earth.
By burning millions of years' worth of living organisms all at once as coal and oil,
we had managed to do so in less than 200 years.
The global air temperature had been relatively stable till the '90s. But it now appeared this was only because the ocean was absorbing much of the excess heat, masking our impact. It was the first indication to me that the earth was beginning to lose its balance.
The reasons for these changes are well established. The ocean has long since become unable to absorb all the excess heat caused by our activities. As a result, the average global temperature today is one degree Celsius warmer than it was 100 years ago. A speed of change that exceeds any in the last 10,000 years.
Summer sea ice in the Arctic has reduced by 40% in 40 years. Our planet is losing its ice. This most pristine and distant of ecosystems is headed for disaster. But there is still time, we can help bring back the ocean to it's original glory.
Reducing Carbon Footprint
Switching to Green Energy
Rethink Planes, Trains, and Automobiles
70% of the mass of birds on this planet are domestic birds, like chickens.
We account for over 30% of the weight of mammals on earth.
A further 60% are the animals we raise to eat.
The rest, from mice to whales, make up just 4%.
Our blind assault on the planet has finally come to alter the very fundamentals of the living world. We have overfished 30% of fish stocks to critical levels. We cut down over 15 billion trees each year. By damming, polluting, and over-extracting rivers and lakes, we've reduced the size of freshwater populations by over 80%.
We're replacing the wild with the tame. Half of the fertile land on earth is now farmland. 70% of the mass of birds on this planet are domestic birds. The vast majority, chickens.
We account for over one-third of the weight of mammals on earth. A further 60% are the animals we raise to eat. The rest, from mice to whales, make up just 4%. This is now our planet, run by humankind for humankind. There is little left for the rest of the living world.
Reducing the Area We Use to Farm
Switching to Plant-based Diet
Applying Efficient Solutions to Food Production