It was on 1 July 1858, 150 years ago today, that the idea of natural selection was first presented to the public in a joint reading of Darwin’s and Wallace’s papers at the Linnean Society of London (an event which they did not recognize as important at the time), which makes today analogous to the Fourth of July for the biology revolution. Celebrate! If you’ve got a some fireworks you were saving for the holiday in a few days time, set off a few early.

The Beagle Project has a summary of the significance of this day in scientific history. If you want an anchor point for the Darwin Year, this is a good candidate — let the science flow forth.

Except, unfortunately, what the heck it was. The Tunguska event was the mysterious explosion of unidentified origin that occured in a remote area of Siberia on 30 June 1908, flattening trees over 2000 square kilometers, but leaving no trace of a crater. Archy has put together a thorough account of what we know, including some of the speculation about the causes.

I rather liked the idea that it was a curse by the thunder god, Ogdy, mainly because “Ogdy” is such a cute name.

Olivia Judson hits exactly the right note in her article about Charles Darwin and the coming centennial year of The Origin: brilliant fellow who revolutionized our thinking, but he wasn’t the only one and he definitely wasn’t the final word on evolution. So let’s party!

This is going to be a great celebratory year for biologists, and I have to confess — I’m also looking forward to the bitter gnashing of teeth by the creationists.

Carl Sagan tells us what we can yet lose to fanaticism and ignorance.

Find out for yourself. Darwin Online has acquired a huge digital collection of Darwin’s papers, everything from book drafts to personal letters, and has them scanned and available on the web. There they are in all their scribbled, crossed out, penciled over, rewritten glory — historians and antiquarians will drool over these, but me, I prefer the neatly typed versions.

The collection of family photos is pretty darned cool, though.

Here’s a cool animation of the progress of the Civil War — it’s like the Confederacy is a giant gelatinous red blob spread over the South, punctuated with explosions as it occasionally makes amoeboid protrusions into the North, only to eventually succumb as it is driven back and chopped into bits.

Sorry, Southerners who read this blog, you may not want to watch. The Yankees will enjoy it, though. Except for the little meter with the casualty counts, which is spinning at a horrendous rate for both sides.

I have to consider this a rather dispiriting story:

In 1818, a whale oil dealer refused to pay a fish-product fine on whale oil, because a whale isn’t a fish. The inspector insisted on the tax, and a spirited court and public battle played out.

It’s dispiriting because you’d think the weight of scientific evidence (and if you prefer it, the testimony of no less an authority than Aristotle) would have settled this case easily, but no…the whale lost and was declared a fish.

Today is the anniversary of the delivery of the Gettysburg Address, which, even if the content weren’t gloriously beautiful, would deserve eternal recognition as an exemplary reminder to speech makers of the virtues of brevity.

You should at least read it today.