legless frogs not caused by pollution

I'm not implying that global warming doesn't exist or that pollution is not a problem.  I just think that it's interesting that the legless frogs found all over the world are not a product of pollution, but of nature vs nature:  dragonflies eat the frogs' legs when the frogs are still tiny!

Around the world, frogs are found with missing or misshaped limbs, a striking deformity that many researchers believe is caused by chemical pollution....The deformed frogs are actually victims of the predatory habits of dragonfly nymphs, which eat the legs of tadpoles. 

(R)esearchers (also) established that many amphibians with extra limbs were actually infected by small parasitic flatworms called Riberoria trematodes.These creatures burrow into the hindquarters of tadpoles where they physically rearrange the limb bud cells and thereby interfere with limb development. 

It seems strange that the dragonflies didn't start eating the tadpole legs until the 1980s or 90s.  Or maybe no one was paying attention to frogs with no legs before then?


image source=article source
screenprint of original
Note: the original article contains a video of a dragonfly eating a tadpole's legs.  Not sure how long it will stay available.

2012 movie, new trailer

There is a new trailer for the 2012 movie, now pushed back to a Nov 13, 2009 release date.
With the new trailer in mind (one version below, I think the one on Yahoo is slightly different), I can say I probably WON'T be yelling at the screen as much as I thought I would, because I don't think there is anything having to do with the Mayan calendar in it. It's just a how-many-ways-can-we-destroy-the-earth-in-one-movie movie. The trailer shows what I think is Palenque for a few seconds and says something like "the earth's oldest civilization tried to warn us". (What? Sumer? Babylon?) And then there are meteors, floods, buildings crashing down randomly, what is apparently California falling into the Pacific, and what I think is an aircraft carrier falling onto the White House from a tidal wave. All that's missing are volcanoes, or maybe they haven't finished the CGI for those yet.
I know this video blows my border, but I can't make it any smaller than 480 wide.

I'm still going to see it of course, but I can probably leave the duct tape home. As more trailers are released, I'll let you know.