Scientists Explore an 'Untouched' Deep-Sea Canyon... And Find Human Trash Beat Us Down There - ScienceAlert

Loki gets its name from appendages that resemble the Norse god of mischief's horns. A mischievous sea cucumber and 56 other newly discovered marine species are making a splash in the South Atlantic Ocean. The new creatures were discovered during an expedition of the Mar del Plata Submarine Canyon off the coast of Argentina in August 2025. This expedition focused on the Brazil–Malvinas Confluence, a region where warm subtropical currents collide with cold, nutrient-rich sub-Antarctic waters. The result is an oceanographic crossroad bustling with biodiversity. The submarine canyon itself is nearly twice as deep as the Grand Canyon (over 11,000 feet).

Lawrence Livermore National Laboratory researcher Isaiah Santistevan led the development of three-dimensional simulations exploring how a nuclear device could deflect or disrupt an asteroid threatening Earth. Credit: Blaise Douros/LLNL Lawrence Livermore National Laboratory (LLNL) researchers are developing three-dimensional simulations to examine how a nuclear device could be used to deflect or potentially disrupt an asteroid threatening Earth.