I'm a geochemist. In the past ten years I've fixed mass spectrometers, blasted sapphires with a laser beam, explored for uranium in a nature reserve, and measured growth patterns in fish ears, and helped design the next generation of the world's most advanced ion probe. My main interest is in-situ mass spectrometry, but I have a soft spot in my heart for thermodynamics, drillers, and cosmochemistry.
In just under 4 days, the MESSNEGER spacecraft will fly past Mercury. It has been over 30 years since a Mercury mission, and over half the planet's surface remains unknown. There are plenty of updates on their home page. Emily at the Planetary Society blog has been posting regular updates.