Scientific news in small doses

Scientific news in small doses

Scientific news in small doses

A few milligrams of all the science news of the week.

Posted yesterday at 9:00 am

Champagne Eric Pierre

Champagne Eric Pierre
The print

More than 5 ° C in the Mediterranean

A recent report by the Cyprus Institute, an NGO specializing in scientific research, predicts an increase in average temperatures of at least 5 ° C by the end of the century in the Eastern Mediterranean and Middle East regions. This is, at least, the expected scenario if the status quo is maintained. The report warns that rising temperatures, coupled with reduced rainfall, will lead to severe droughts in these regions, affecting millions of people and limiting access to clean water and food.

Quiz

How many acres could disappear in the United States due to sea level rise?


PHOTO BY RYAN C. HERMENS, ASSOCIATED PRESS ARCHIVE

A road and some buildings are submerged near Lost Creek, Ky., On July 28.

According to the calculations of a recent study conducted by the NGO Climate Central, the equivalent of 1.7 million hectares would be flooded by 2050. A share that would rise to 3.7 million hectares by 2100. By way of comparison, yes note that the area of ​​the island of Montreal is 48,000 hectares.

The number


PHOTO STRINGER, REUTERS

An American agency guarantees the safety of workers in a context where the climate is hot.

705

This is the number of heat-related inspections that were conducted by the Occupational Safety and Health Administration in 45 US states between April and July. This agency, the equivalent of CNESST in Quebec, conducted an average of only 200 inspections per year between 2015 and 2020. The agency’s budgets have increased to enable it to ensure worker safety in a context where the weather is hot. Between 2011 and 2019, the U.S. Department of Labor recorded 344 deaths and over 22,000 injuries and heat-related illnesses.

Bumblebees threatened since early spring


PHOTO SARAH FOLTZ JORDAN, ASSOCIATED PRESS ARCHIVE

Bumblebees are the main pollinators of fruit and vegetable crops.

Are bumblebees that hibernate in winter threatened by the early arrival of spring? This is the question that two University of Ottawa researchers, Olga Koppel and Jeremy Kerr, tried to answer. Their study was published in the journal Biological conservation concludes that the awakening of the bumblebees is not synchronized with the early arrival of spring. According to the researchers, a badly planned awakening can make it more difficult to access food, an essential condition for ensuring its survival. Their study found a strong correlation between climate and changes in emergence from hibernation in 15 of the 21 species of bumblebees. Remember that bumblebees are the main pollinators of fruit and vegetable crops.

More methane in the atmosphere


PHOTOS ANGUS MORDANT, REUTERS ARCHIVES

Methane is a much more potent greenhouse gas than carbon dioxide, although it has a much shorter lifespan.

According to the most recent survey by the National Oceanic and Atmospheric Administration, the concentration of methane in the atmosphere increased from 1891.62 to 1908.74 parts per billion (ppb) between May 2021 and May 2022. Recall that methane is a gas much more powerful greenhouse than carbon dioxide, although it has a much shorter lifespan. Scientists have also noticed a significant acceleration in the rise in methane levels in recent years. About 100 countries pledged last year to cut their methane emissions by 30% by 2030 from 2020 levels.

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