What You're Not Being Told About Earth's Magnetic Field
April 17, 2015
The simple story for the public: a dynamo creates the earth's magnetic field. The real story: complex scenario needed to start it and keep it running.
Blow to Supernova Nucleogenesis Theory
January 20, 2015
There's 100 times less of a radioactive element on the ocean floor than expected.
Uranium-Lead Dating Fraught With Discordance
January 8, 2013
Behind the confidence of uranium-lead dates hides worry about numbers that don't match up.