Current Research Projects Thermal and chemical evolution of Earth [KEYWORDS] Global energetics of mantle convection and its self-organization. The initation of plate tectonics in Earth's history. Coupled core-mantle evolution and the history of geodynamo. Degassing history and global water cycle. Scaling laws in geological fluid mechanics. Quantitative global geochemistry. Structure of mantle convection. Geosystem sciences. Recent research products include: Archean geodynamics: A synthesis New composition model for Earth's primitive mantle Low-CaRb marble-cake mantle [Colored version of Figure 1 (844 x 428 pixels)] How to damage oceanic lithosphere by thermal cracking Bounds on the temporal variability of terrestrial heat flux Physics of Maxwellian oceanic lithosphere New reference model for the evolution of oceanic lithosphere [GMT-formatted grid files for the distance and correlation maps] Terrestrial magmatism and mantle convection [KEYWORDS] Crustal genesis and recycling. Physics and chemistry of melt generation and migration. Large igneous provinces and hotspots. Mantle plumes and the core-mantle boundary region. Seismic tomography. Recent research products include: The origin of Ontong Java Plateau Plumes are not what they seem: Theory of firm mantle plumes North Atlantic Igneous Province: A new dynamic model How to connect crustal seismology and igneous petrology Experimental bounds on upper mantle rheology