Oxygen in the oceans is being lost at an unprecedented rate as a result of the climate emergency and intensive farming. Sharks, tuna, marlin, and other large fish species are at particular risk, with many vital ecosystems in danger of collapse.
The first tranche of data offers clues to long-standing mysteries, including why the sun’s atmosphere, known as the corona, is hundreds of times hotter than its surface, as well as the precise origins of the solar wind.
UN Secretary-General Antonio Guterres has described as “utterly inadequate” efforts to stop climate change. He noted that the world has the scientific knowledge and technical means to limit global warming but political will is lacking.
Evidence is mounting that tipping points in the Earth system — such as the loss of the Amazon rainforest or the West Antarctic ice sheet — could be more likely than was thought, potentially committing the world to widespread, long-term irreversible changes.
Levels of greenhouse gases in the atmosphere have reached a new high, according to the World Meteorological Organization. Global emissions are not estimated to peak by 2030, let alone by 2020, if current climate policies and ambition levels are maintained.
Venice has been engulfed by 1.87m (6ft) high water levels, flooding its historic basilica and cutting power to homes. More than 80% of the city, a UNESCO world heritage site, was under water when tides were at their highest.