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
Gliese 229B was the first known brown dwarf, discovered in 1995. In new research, astronomers observed Gliese 229 B with the GRAVITY interferometer and, separately, the CRIRES+ spectrograph at ESO’s Very Large Telescope. Both sets of observations independently resolved Gliese 229B into two components, Gliese 229 Ba and Bb. They orbit each other every 12.1 days with a semimajor axis of
Saudi Arabia has achieved a historic milestone by successfully testing the Middle East and North Africa's first hydrogen-powered train. Saudi Arabia has marked a historic milestone by successfully testing the Middle East and North Africa’s first hydrogen-powered train. Announced by Dr. Bashar Al-Malik, CEO of the Saudi Railway Company (SAR), during the inaugural Global Logistics
World’s first hydrogen-powered large wheel loader prototype being tested in pilot project Liebherr and STRABAG have partnered in the decarbonized construction test, aiming to save 100 metric tons of carbon dioxide emissions per year By Heavy Equipment Guide Staff October 16, 2024 A prototype of Liebherr's large hydrogen-powered wheel loader, the first of its kind
Home Propulsion Coastal Liberty OSV debuts containerized hydrogen-electric energy system October 16, 2024, by Naida Hakirevic Prevljak Coastal Liberty, an offshore service supply vessel (OSV) owned and operated by the Dutch branch of the Jifmar Group, has undergone a refit and now sails emission-free on green hydrogen. Courtesy of eCap Marine The 43-meter-long vessel recently
2024 PT5, a new mini-moon of our planet, arrived in Earth’s orbit on September 29, 2024. 2024 PT5 will experience a temporarily captured flyby in 2024, from September 29 until November 25. Image credit: University of Colorado. 2024 PT5 was discovered on August 7, 2024 by the Asteroid Terrestrial-impact Last Alert System in Sutherland, South Africa. This near-Earth
