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UNSW scientists have shown -- for the first time -- that a series of high-profile burial sites in the Pacific, Mediterranean and northern Scotland were likely related to catastrophic tsunamis... Honorary Professor James Goff from the PANGEA Research Centre at UNSW Sydney, who co-authored the paper, says the research provides new insights into past human-environment interactions and a new perspective on past catastrophic events... The researchers looked at coastal mass burial sites in the Solomon Islands and Vanuatu as well as in Orkney and Shetland. The mass graves cover a long timeframe of human history -- they are from about...

A strange green organism has spread around the globe, clogging up the world's rivers It began with a few small strange patches of slime, clinging to the rocks of the Heber River in Canada. Within a year, the patches had become thick, blooming mats. Within a few years the mats had grown into a giant green snot. And within a few decades this snot had spread around the world, clogging up rivers as far away as South America, Europe and Australasia. This snot, which is still flourishing today, is caused by a microscopic alga, a diatom that goes by its...

NOAA/Gordon Taylor Diatoms are abundant oceanic plankton that remove billions of tons of carbon dioxide from the air each year. Their evolutionary history needs to be rewritten, according to a new Cornell study. The evolutionary history of diatoms -- abundant oceanic plankton that remove billions of tons of carbon dioxide from the air each year -- needs to be rewritten, according to a new Cornell study. The findings suggest that after a sudden rise in species numbers, diatoms abruptly declined about 33 million years ago -- trends that coincided with severe global cooling. The study is published in the...