Archaeologists have unearthed hundreds of Clovis stone tools at the 13,000-year-old campsite of Belson in southwest Michigan; Clovis people traveled to this site annually, probably in the summer, for at least three but likely up to five consecutive years; the stone artifacts also show evidence that the settlers’ diets included a wide variety of animals
Blood groups are complex. The two best known blood group systems are ABO and Rh. Within each blood group, red cells can carry surface markers called antigens. For example, within the ABO blood group system, there are the A and B antigens — people with A have the A antigen, people with B have the
Using images from the JunoCam instrument aboard NASA’s Juno spacecraft, planetary scientists have spotted a fresh volcano with multiple lava flows and volcanic deposits covering an area about 180 x 180 km. A comparison of the JunoCam image from February 2024 with Galileo spacecraft imagery of the same area in November 1997 (grayscale insert) reveals
Chemists at the Leibniz Institute for Tropospheric Research have provided experimental evidence that sulfurous acid (H2SO3), once formed in the gas phase, is kinetically stable enough to allow its characterization and subsequent reactions. In the gas phase, if once formed, sulfurous acid shows a certain kinetic stability with an estimated lifetime of at least one
The images in the Martian Cloud Atlas have been captured by the High Resolution Stereo Camera (HRSC) instrument on ESA’s Mars Express spacecraft. Lee waves on Mars are created by the wind encountering obstacles and build up on the ‘leeward’ or downwind side. Image credit: ESA / DLR / FU Berlin. Due to the elliptical
Paleontologists have found the fossilized seeds of gymnosperm trees — relatives of today’s conifers and ginkgos — in stomachs of two specimens of Longipteryx chaoyangensis, one of the earliest known birds and one of the strangest. The discovery shows that these birds were eating fruits, despite a long-standing hypothesis that they feasted on fish, and
Astronomers using the NASA/ESA Hubble Space Telescope have captured a magnificent new image of the unbarred spiral galaxy NGC 4414. This Hubble image shows NGC 4414, an unbarred spiral galaxy located 51 million light-years away in the constellation of Coma Berenices. Image credit: NASA / ESA / Hubble / O. Graur / S.W. Jha /
Home Hydrogen India and Germany forge green hydrogen ties October 28, 2024, by Aida Čučuk To promote the market ramp-up of green hydrogen and enhance cooperation in climate action and sustainable development, India and Germany have launched the “Indo-German Green Hydrogen Roadmap.” The countries released the roadmap during the seventh round of India-Germany Inter-Governmental Consultations
Water is essential for life, but the hydrogen bond—a critical interaction that brings H2O molecules together—remains complex and not fully understood. Hydrogen bonds occur when hydrogen and oxygen atoms in water molecules interact, sharing an electronic charge. This charge-sharing creates a 3D network of hydrogen bonds that gives liquid water unique properties. However, theoretical simulations
Published Oct 27th, 2024 9:02AM EDT Have you ever wondered what it looks like when a water molecule forms? Well, now you can finally see it in action, as scientists captured a molecular-scale video of that very famous meeting when hydrogen and oxygen fuse to become H2O. Further, the scientists believe the method witnessed in
