The climate crisis is causing a widespread fall in oxygen levels in lakes across the world, suffocating wildlife and threatening drinking water supplies. Falling levels of oxygen in oceans had already been identified, but new research shows that the decline in lakes has been between three and nine times faster in the past 40 years. Scientists found oxygen levels had fallen by 19% in deep waters and 5% at the surface. Rising temperatures driven by global heating is the main cause, because warmer water cannot hold as much oxygen. Furthermore, rising summer heat leaves the top layer of lakes hotter and less dense than the waters below, meaning mixing is reduced and oxygen supply to the depths falls.
Guardian 2nd June 2021 read more »
Rich countries are falling behind on their pledges to help the poor world tackle the climate crisis, new research has shown, on the eve of a meeting of the finance ministers of the G7 industrialised economies. The UK and the US are the only two G7 countries to have set out proposals to increase climate finance in recent months, according to a report by Care Denmark, a member of the international NGO network. Climate finance is used by poor countries to reduce their greenhouse gas emissions, for instance through investment in clean energy generation, and to adapt to the impacts of extreme weather such as floods and droughts. Care found, in a report called Hollow Commitments: An analysis of developed countries’ climate finance plans, that most G7 countries have still made no new commitments on climate finance, despite a pledge by the developed world made in 2009 to provide $100bn (£70bn) a year to developing countries by 2020, which has not been met.
Guardian 3rd June 2021 read more »