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Atmospheric aerosols, notably those from anthropogenic sources, adversely affect human health and play an important role in changing the Earth’s climate. The scientific interest in these effects of anthropogenic aerosols initially focused on sulfate and to a lesser extent on other low-volatile inorganic species, and subsequently on carbonaceous compounds. Inorganic particulate nitrate constituents ...

Hydrogen under ambient pressure and low temperature forms a molecular crystal which under high pressure of ~400 GPa is predicted turn into metal and at further compression up to ~500 GPa hydrogen molecules dissociate and are transformed to a monoatomic crystal. This simplest metal is predicted to be a superconductor with a very high critical temperature Tc ~200 K. Moreover, this superconductor m ...