How's this for a coincidence? Charles Darwin and Abraham Lincoln were born in the same year, on the same day: Feb. 12, 1809. As historical facts go, it amounts to little more than a footnote. Still, while it's just a coincidence, it's a coincidence that's guaranteed to make you do a double take the first time you run across it. Everybody knows Darwin and Lincoln were near-mythic figures in the 19th century. But who ever thinks of them in tandem? Who puts the theory of evolution and the Civil War in the same sentence? Why would you, unless you're writing your dissertation on epochal events in the 19th century? But instinctively, we want to say that they belong together. It's not just because they were both great men, and not because they happen to be exact coevals. Rather, it's because the scientist and the politician each touched off a revolution that changed the world.

Vaughn at Mind Hacks has a short post, Memes exist: tell your friends (clever, Vaughn, very clever), which links to a couple of meme-related talks at TED. Daniel linked to a lot of the TED talks back in April (TED: Ideas Worth Spreading), but Vaughn focuses on videos of Daniel Dennett and Susan Blackmore, both of whom are ardent meme advocates.

It's 150 years since Darwin made one of the the most significant breakthroughs in scientific history - the theory of natural selection. But if it hadn't been for a young ornithologist on the other side of the world, his seminal work might never have appeared. Robin McKie tells the extraordinary story behind The Origin of Species

In a week or so, the trumpets will sound, heralding the start of 18 months of non-stop festivities in honor of Charles Darwin. July 1, 2008, is the 150th anniversary of the first announcement of his discovery of natural selection, the main driving force of evolution.

Dr. Elisabet Sahtouris talks to Big Picture about reuniting spirituality with science in order to form a new world view

The first sentence of Darwin's section on the eye is often cited by his enemies as the naturalist throwing in the towel. The idea that the exquisite, complex structure of the eye could have evolved by accumulated random mutations, Darwin says, seems "absurd to the highest possible degree". But read on and Darwin cajoles his reader to embrace the full power of natural selection.

150 years ago, Charles Darwin unveiled his theory of natural selection. To mark this anniversary we bring you the definitive guide to the naturalist's great book, with extracts from key chapters and essays from leading scientists and thinkers

Charles Darwin had a big idea, arguably the most powerful idea ever. And like all the best ideas it is beguilingly simple. In fact, it is so staggeringly elementary, so blindingly obvious that although others before him tinkered nearby, nobody thought to look for it in the right place.

According to Darwin’s theory of evolution, individuals in a species pass successful traits onto their offspring through a process called “deterministic inheritance.” Over multiple generations, advantageous developmental trends – such as the lengthening of the giraffe’s neck – occur.

his site contains Darwin's complete publications, thousands of handwritten manuscripts and the largest Darwin bibliography and manuscript catalogue ever published; Darwin Onlinealso hundreds of supplementary works: biographies, obituaries, reviews, reference works and more.