Climate Change ☀️
Early research suggests climate change could lead to more stillbirths
Scientists are investigating whether rising global temperatures may lead to more stillbirths, saying further study is needed on the subject as climates change.

UQ PhD candidate Jessica Sexton said while this was very early research, it did show a possible link between stillbirth and high and low ambient temperature exposures during pregnancy.

"Overall, risk of stillbirth appears to increase when the ambient temperature is below 15 degrees Celcius and above 23.4 degrees Celsius, with the highest risk being above 29.4 degrees Celsius," Ms Sexton said.

"An estimated 17 to 19 per cent of stillbirths are potentially attributable to chronic exposure to extreme hot and cold temperatures during pregnancy.

"And, as the world's temperatures rise due to climate change, this link will potentially increase stillbirth likelihood globally.

"But these findings are from the very limited research currently available, so expectant mothers shouldn't be anxious -- there's still plenty of follow-up research that needs to happen."
Read the full article: https://www.sciencedaily.com/releases/2021/05/210524092019.htm

Fluorescent light clarifies relationship between heat stress and crop yield
Scientists report that it is possible to detect and predict heat damage in crops by measuring the fluorescent light signature of plant leaves experiencing heat stress. If collected via satellite, this fluorescent signal could support widespread monitoring of growth and crop yield under the heat stress of climate change, the researchers say.
Read the full article: https://www.sciencedaily.com/releases/2021/05/210524161719.htm

Infertility poses major threat to biodiversity during climate change, study warns
A new study by ecologists warns that heat-induced male infertility will see some species succumb to the effects of climate change earlier than thought. Currently, scientists are trying to predict where species will be lost due to climate change so they can plan effective conservation strategies. However, research on temperature tolerance has generally focused on the temperatures that are lethal to organisms, rather than those at which organisms can no longer breed.
Read the full article: https://www.sciencedaily.com/releases/2021/05/210524161754.htm

Greenland glacial meltwaters rich in mercury
New research shows that concentrations of the toxic element mercury in rivers and fjords connected to the Greenland Ice Sheet are comparable to rivers in industrial China, an unexpected finding that is raising questions about the effects of glacial melting in an area that is a major exporter of seafood. Typical dissolved mercury content in rivers are about 1 -- 10 ng L-1 (the equivalent of a salt grain-sized amount of mercury in an Olympic swimming pool of water). In the glacier meltwater rivers sampled in Greenland, scientists found dissolved mercury levels in excess of 150 ng L-1, far higher than an average river. Particulate mercury carried by glacial flour (the sediment that makes glacial rivers look milky) was found in very high concentrations of more than 2000 ng L-1. With any unusual finding, the results raise more questions than answers. Researchers are unclear if the mercury levels will dissipate farther away from the ice sheet and whether this "glacier" derived mercury is making its way into the aquatic food web, where it can often concentrate further.
Read the full article: https://www.sciencedaily.com/releases/2021/05/210524161806.htm

Climate change, periodic modification of Earth’s climate brought about as a result of changes in the atmosphere as well as interactions between the atmosphere and various other geologic, chemical, biological, and geographic factors within the Earth system.

Source: Climate change - Evidence for climate change | Britannica
Climate Change is the defining issue of our time and we are at a defining moment. From shifting weather patterns that threaten food production, to rising sea levels that increase the risk of catastrophic flooding, the impacts of climate change are global in scope and unprecedented in scale. Without drastic action today, adapting to these impacts in the future will be more difficult and costly.

Source: Climate Change | United Nations