Hundreds of millions of years ago the oceans teamed with eel-like conodonts that had incredibly sharp teeth, fossils show

The tiny teeth of a long-extinct vertebrate – with tips only two micrometres across: one twentieth the width of a human hair – are the sharpest dental structures ever measured, new research from the University of Bristol and Monash University, … Continue reading

Today’s paradox: global warming may offset Criegee cooling

And that’s not quite the same as having things the other way around. If you see Criegee biradicals as silver bullet, remember they are already constantly being fired up…