Related by context. Frequent words. (Click for all words.) 61 Snowball Earth 57 magnetic reconnection 57 Brownian motion 56 planetesimals 55 singularities 55 Younger Dryas 55 Pacific Decadal Oscillation 54 atmospheric circulation 53 polar vortex 53 solar nebula 53 sunspot activity 53 glaciation 53 dynamical 53 solar irradiance 52 plate tectonics 52 quantum gravity 52 Arctic Oscillation 52 Geoengineering 52 paleoclimate 52 Little Ice Age 52 numerical simulations 52 supercontinent 52 spacetime 52 lithosphere 51 interglacial 51 oscillation 51 auroral 51 climate modelers 51 crustal 50 glacial melting 50 Cepheids 50 Theorists 50 ENSO 50 hydrological cycle 50 gravitational lensing 50 abiotic 50 continental drift 50 Medieval Warm Period 50 oscillations 50 interglacial period 50 sunspot cycle 50 Oort Cloud 50 planetary nebulae 50 radiative forcing 50 meteoroid 50 Computer simulations 49 Hawking radiation 49 oxygen isotopes 49 Higgs particle 49 volcanism 49 latitudinal 49 Quantum Mechanics 49 thermodynamic 49 electron density 49 continental crust 49 Quaternary 49 epochs 48 sunspots 48 galaxy formation 48 subduction 48 excitations 48 antiprotons 48 landmasses 48 Phaethon 48 gravitational attraction 48 WASP #b 48 Meridiani 48 Anthropocene 48 cosmic ray 48 quantum theory 48 greenhouse warming 48 El Niños 48 irradiance 48 Bose Einstein condensate 47 microlensing 47 Morphology 47 subatomic particle 47 polar 47 iron fertilization 47 atmospheric CO 47 solstices 47 equinoxes 47 phenomena 47 magnetar 47 fermions 47 biogeochemical 47 cosmological constant 47 isotopic composition 47 Haumea 47 interferometers 47 baryons 47 marine sediments 47 Paul Dirac 47 hydrothermal activity 47 anthropogenic global warming 47 aerosol particles 47 Gravitational 47 radioactive decay 47 supernova explosion 47 Iapetus 47 magmatic