Mother-son team’s fossil find shows how nematodes—and all arthropods—arose

SCIENCE MAGAZINE - Some of Ian Hughes’s earliest memories are of playing in the dust and digging holes while his mom and her colleagues searched for fossils in South Australia. His mother, University of California, Riverside, paleoecologist Mary Droser, was searching for fossilized remnants of animals from the Ediacaran era, stretching from approximately 635 million...
By Elizabeth Pennisi | Science |

500-million-year-old worm fossil traces origins of insects and arachnids

INTERESTING ENGINEERING - Over 500 million years ago, the ancestors of a diverse group of animals known as Ecdysozoans existed. This group includes various species of insects, arachnids, and nematode worms. For a long time, the group’s early history was a blank page until now. A team of researchers has identified the earliest known ecdysozoan...
By Mrigakshi Dixit | Interesting Engineering |

Ice Melting Could Slow Vital Ocean Current - Which Could Slightly Slow Melting

IFL SCIENCE - Complementary studies by separate teams have explored the interactions between melting ice in the North Atlantic and the flow of a crucial ocean current. One intensifies the alarm many oceanographers have already expressed: that more rapid melting will cause a crucial part of the Gulf Stream system to slow or even stop...
By Stephen Luntz | IFL Science |

The Arctic is melting fast, but a slowing ocean current could help

EARTH.COM - Under the unforgiving Arctic sun, the wintry landscape swarms with shivers and whispers that tell tales of an unrelenting rise in temperatures. This icy expanse, our last bastion of frost, is experiencing a warming spree that outpaces the global average by three to four times. But here’s a twist: new research suggests that...
By Sanjana Gajbhiye | Earth.com |

Half-a-billion-year-old 'marine Roomba' is earliest known asymmetrical animal

LIVE SCIENCE - The earliest known animal to show evidence of an asymmetrical body lived over half a billion years ago in what is now the Australian outback, a new study reports. The 555 million-year-old creature, dubbed Quaestio simpsonorum in a study published Sept. 3 in the journal Evolution and Development, was able to move...
By Sierra Bouchér | Live Science |

Carbon Dioxide May Have Squelched E.T.’s Evolution In The Milky Way

FORBES - Carbon Dioxide is often vilified as a bugaboo greenhouse gas. But its presence here on early earth is likely one of the reasons we are here to talk about it. Carbon dioxide, or CO2, was likely needed in large quantities in earth’s early atmosphere to raise temperatures sufficiently to enable the onset of...
By Bruce Dorminey | Forbes |

A transatlantic flight may turn Saharan dust into a key ocean nutrient

SCIENCE NEWS - As dust from the Sahara blows thousands of kilometers across the Atlantic Ocean, it becomes progressively more nutritious for marine microbes, a new study suggests. Chemical reactions in the atmosphere chew on iron minerals in the dust, making them more water soluble and creating a crucial nutrient source for the iron-starved seas...
By Douglas Fox | Science News |

Our Atmosphere Transforms Dust From The Sahara Into Minerals That Fuel Life

SCIENCE ALERT - Dust swept from the Sahara desert provides life at the bottom of the marine food chain with a critical nutrient. Without the iron carried far and wide in this mineral cloud, oceanic phytoplankton would struggle to bloom. According to a new study led by the University of California, Riverside, the more time...
By Tessa Koumoundouros | Science Alert |

The Sun Will Destroy the Earth One Day, Right? Maybe Not.

THE NEW YORK TIMES - In six billion years the sun will expand into a red giant. That process should consume Mercury, and maybe Venus. For a long time we have thought it might incinerate Earth, too. But perhaps all is not doomed for planet Earth (although it may be a world that will have...
By Jonathan O’Callaghan | The New York Times |

Oceanic life found to be thriving thanks to Saharan dust blown from thousands of kilometers away

FRONTIERS - Scientists from the US measured the relative amounts of ‘bioreactive’ iron in four sediment cores from the bottom of the Atlantic. They showed for the first time that the further dust is blown from the Sahara, the more iron in it becomes bioreactive through chemical processes in the atmosphere. These results have important...
By Michiel Dijkstra | Frontiers |
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