Expect moderate levels of ground-level ozone, an urban pollutant that can affect those with sensitive respiratory systems, to be in the skies over the Houston metro area on Friday, according to Texas ...
In 2021, the global annual mean concentration of methane was 1890 parts per billion (ppb), while for nitrous oxide it was 334 ppb. Respectively, these are rises of 158 per cent and 22 per cent above ...