Learning to Live on the Earth (with Links to Various Interesting Stuff)

I talk a lot about the environment on this blog, because in some ways it is more important than any other issue. After all, if humanity can't find a way to live on the Earth without catastrophically disrupting the environment, it won't matter much whether we can solve our other problems or not (though I support colonizing space, that can only involve a tiny fraction of humanity for the foreseeable future). The terrible tragedy in the Philippines is just one example of how destructive the environment can be, and while this particular typhoon may not have been directly caused by global warming, if we continue to heat up the planet, we can expect more of this and other kinds of environmental disasters. The following are some links to various interesting things on the Internet related to humanity's relationship to the environment and the Earth.

First, there are a couple of news stories here and here about how carbon dioxide levels have reached highs not seen for nearly a million years, that is, since well before modern humans evolved. What's more, these records will soon be broken, even if we take immediate action to drastically reduce carbon emissions – and there is little sign of that happening. Unfortunately, in the world's largest economy, the United States, there is still a large contingent of stubborn ignoramuses who insist that there isn't even a problem, and enough of them are in Congress to block most substantial action. Even on the other side of the political divide, while President Obama has done quite a few good things on the environment where he has had the power to act without going through Congress, his environmental record still has a few serious black marks, such as his administration's continued promotion of corn-based ethanol. As for other countries, though Europe has been more proactive in fighting climate change, even they could do better, and most other nations are doing no better than the US or even worse (though there is less excuse for failing to act when you are a wealthy nation like the US).

Then there's this fascinating map simulating births and deaths around the world in real time (for a larger and more detailed version, click here). Of course the map isn't capable of tracking actual births and deaths, but with sufficient statistical information on birth and death rates around the world, it can simulate them fairly closely (as a side note, I should point out one serious flaw on the map: Taiwan is labeled as a "Province of China", an absurd label that crops up on some websites from time to time apparently due to use of country codes from the UN [which of course goes along with Chinese propaganda with respect to Taiwan], though Taiwan's current flag also appears and it is in effect treated as what it is, a separate country). The most fascinating – and disturbing – aspect of the simulation is the contrast between the birth and death rates. In only four minutes, a thousand new babies have been born, but in the same space of time, fewer than five hundred people have died. In other words, in only four minutes, the world's population has increased by over five hundred. In ten minutes, it has increased by almost 1,500. At that rate, it only takes five days to add a million people to the world's population. This rapidly increasing population only increases the environmental problems we face, including climate change. It is no surprise that it has been suggested that one of the best short term ways to fight climate change is contraception, or at least radically reducing the birth rate. I wholeheartedly agree.

But to conclude on a more pleasant note, NASA recently published a new image compiled from pictures taken by the spacecraft Cassini while in orbit around Saturn. The pictures were taken while Cassini was on the dark side of the planet and so Saturn was eclipsing the Sun, allowing the much fainter inner planets to be seen (normally the glare of the Sun drowns them out). So in this picture, in addition to an incredible back-lit view of Saturn's rings and a few of its satellites, we can see a small red dot, a slightly bigger white dot, and a similarly-sized blue dot (with a faint grey dot attached). These are, respectively, Mars, Venus, and the Earth itself (plus the Moon). This is, more or less, how our planet looks from Saturn, at a distance of over a billion kilometers. A picture like this helps put humanity's problems into perspective, but it's also a reminder of how small the Earth really is on an astronomical scale. If we can learn to treat the Earth's resources as the limited, precious things they are, perhaps humanity can survive for a long time into the future and find ways to solve all its other problems.