(a) Map showing the locations of the two largest Nord Stream events and other events analyzed in this study. Locations of the presumed earthquakes are those published by the Geological Survey of Denmark and Greenland. Locations of the August 2019 undersea mine detonations in the Fehmarnbelt Nature Conservation Area (bounded by the red line) published by … Read more
Greenland. Credit: Unsplash/CC0 Public Domain Fossils of a new group of animal predators have been located in the Early Cambrian Sirius Passet fossil locality in North Greenland. These large worms may be some of the earliest carnivorous animals to have colonized the water column more than 518 million years ago, revealing a past dynasty of … Read more
Credit: NASA A colorful, festive image shows different types of light containing the remains of not one, but at least two exploded stars. This supernova remnant is known as 30 Doradus B (30 Dor B for short) and is part of a larger region of space where stars have been continuously forming for the past … Read more
A cartoon of paired homologous chromosomes (blue) with the synaptonemal complex (SC, green) assembled between them. Below, from top to bottom, are cartoons depicting the localization of proteins in a normal SC, in the SC of the researcher-bred infertile nematodes, and in the SC of the nematodes with the suppressor-mutation. Credit: Lisa Kursel and Maria … Read more
Synthetic process of PMPC polymers and TmabPMPCs. (A) Synthetic process of thiol-reactive maleimide-modified PMPC. MPC was first polymerized following a RAFT polymerization to obtain Carboxyl-terminated PMPC. Then the end group was converted to an amino group with Ethylenediamine modification, followed by converting the amino group to maleimide group by Sulfo-SMCC to obtain maleimide-modified PMPC. (B) … Read more
Credit: Unsplash/CC0 Public Domain The first SpaceX launch of 2024, which took place Tuesday night, included something that none of the company’s prior launches did. The Falcon 9 rocket carried 21 low-orbit satellites for its sister company, Starlink, including six that—for the first time—feature direct-to-cell communications. The satellites are designed to eliminate cellphone service “dead … Read more
Credit: Pixabay/CC0 Public Domain After a record 2023, SpaceX is not slowing down its launch plans for 2024 with the first launch of the year from Florida slated for Wednesday evening. A Falcon 9 rocket carrying a telecom satellite for private Swedish company Ovzon is slated to lift off from Cape Canaveral Space Force Station’s … Read more
Shorebirds forage in kelp wrack on a beach in California. Credit: Jenny Dugan, UC Santa Barbara The Santa Barbara Channel’s kelp forests and its sandy beaches are intimately connected. Giant kelp, the foundation species of rocky reefs, serves as a major part of the beach food web as fronds of the giant seaweed break away … Read more
Credit: iScience (2023). DOI: 10.1016/j.isci.2023.108533 Africa is on fire. It has been for thousands of years. The continent contains more than 50% of the total area on Earth that is burning, on average, and there is no sign of it stopping; indeed, the migrating, hemisphere-hopping African wildfire season is steadily increasing. The fire is essentially … Read more
Developmental stage-specific downregulation of chlorophyll using ethanol inducible promoter. (a) Biosynthesis pathway of chlorophyll and the model structure of Mg-chelatase with three subunits (red rectangle). (b) Design of ethanol inducible CHLI sRNA construct. (c) Location of T-DNA (red triangle) in two tobacco mutants (mt1 and mt2). (d) Changes in leaf color phenotype after 100 mL 1% … Read more
