Coral reefs losing ability to keep pace with sea-level rise

Many coral reefs will be unable to keep growing fast enough to keep up with rising sea levels, leaving tropical coastlines and low-lying islands exposed to increased erosion and flooding risk, new research suggests.

CRISPR used to genetically edit coral, researchers report

Coral reefs on the precipice of collapse may get a conservation boost from the gene-editing tool known as CRISPR, according to researchers at the Stanford University School of Medicine and their collaborators.

Soft tissue makes coral tougher in the face of climate change

Climate change and ocean warming threaten coral reefs and disrupt the harmonious relationship between corals and their symbiotic algae, a process known as "coral bleaching." However, a new study conducted by scientists at ...

How coral bleaching threatens Caribbean communities

Climate change has fueled coral reef bleaching throughout the tropics, with negative consequences for reef ecosystems and the people who depend on them. A new study finds that in the Caribbean, independent island nations ...

New research on deep reefs finds 195 species of coral

Queensland Museum scientists have used remotely operated vehicles and specialised diving techniques to find 195 coral species in deeper reef areas in the Great Barrier Reef region.

page 1 from 17


Bleach refers to a number of chemicals that remove color, whiten, or disinfect, often via oxidation. Common chemical bleaches include household chlorine bleach (a solution of approximately 3–6% sodium hypochlorite, NaClO), lye, oxygen bleach (which contains either hydrogen peroxide or a peroxide-releasing compound), and bleaching powder (calcium hypochlorite). The bleaching process was known to most ancient civilizations and has been around for thousands of years. Modern bleaches resulted from the work of 18th century scientists including Swedish chemist Carl Wilhelm Scheele, French scientists Claude Berthollet and Antoine Germain Labarraque, and Scottish chemist Charles Tennant. Household chlorine bleach is created in two ways: by separating sodium hypochlorite from sea water or brine using electrolysis, or by adding chlorine gas to sodium hydroxide which produces sodium hypochlorite, water and sodium chloride.

Many bleaches have strong bactericidal properties, and are used for disinfecting and sterilizing.

Examples of peroxide-releasing compounds are sodium perborate, sodium percarbonate, sodium persulfate, tetrasodium pyrophosphate, or urea peroxide together with catalysts and activators, e.g., tetraacetylethylenediamine or sodium nonanoyloxybenzenesulfonate.

This text uses material from Wikipedia, licensed under CC BY-SA