In the mid‐1970s, it was recognized that chlorofluorocarbons (CFCs) were strong
greenhouse gases that could have substantial impacts on radiative forcing of climate …

Production and consumption processes in soils contribute to the global cycles of many trace
gases (CH4, CO, OCS, H2, N2O, and NO) that are relevant for atmospheric chemistry and …

Detection of long‐term, linear trends is affected by a number of factors, including the size of
trend to be detected, the time span of available data, and the magnitude of variability and …

Amphibian populations have suffered widespread declines and extinctions in recent
decades. Although climatic changes, increased exposure to ultraviolet-B (UV-B) radiation …

Spectral measurements of ultraviolet-B radiation made at Toronto since 1989 indicate that
the intensity of light at wavelengths near 300 nanometers has increased by 35 percent per …

We have assessed ultraviolet-B (UV-B)-induced injury in wild-type Arabidopsis thaliana and
two mutants with altered aromatic secondary product biosynthesis. Arabidopsis mutants …

To further our understanding of how plants defend against the harmful effects of ultraviolet
(UV) light, we characterized an Arabidopsis mutant hypersensitive to UV-B. This mutant, UV …

Chemical Fate and Transport in the Environment, Fourth Edition explains the fundamental
principles of mass transport, chemical partitioning, and chemical/biological transformations …

Photolyase repairs ultraviolet (UV) damage to DNA by splitting the cyclobutane ring of the
major UV photoproduct, the cis, syn-cyclobutane pyrimidine dimer (Pyr<> Pyr). The reaction …

The populations of many amphibian species, in widely scattered habitats, appear to be in
severe decline; other amphibians show no such declines. There is no known single cause …