David Alfaro Siqueiros

DAVID ALFARO SIQUEIROS THE REVOLUTIONARY

August 5, 2020 by blogadmin

DAVID ALFARO SIQUEIROS THE REVOLUTIONARY

Ornithologists Identify Cryptic New Bird Species in Japan
by Natali Anderson on March 18, 2026 at 1:47 am
Genetic and acoustic evidence show that the rare Ijima’s leaf warbler (Phylloscopus ijimae) is actually two distinct bird species, including the newly-identified Tokara leaf warbler -- both with […]
Oviraptors May Have Needed the Sun to Hatch Their Eggs
by News Staff on March 17, 2026 at 11:42 pm
New experiments indicate bird-like oviraptorid dinosaurs could not fully warm their eggs with body heat alone, instead combining brooding with solar warmth in semi-open nests. The post Oviraptors May […]
DNA’s Building Blocks May Have Arrived from Space, Asteroid Ryugu Samples Suggest
by News Staff on March 17, 2026 at 9:42 pm
Samples returned by JAXA’s Hayabusa-2 mission from the C-type asteroid (162173) Ryugu contain all five canonical nucleobases -- purines (adenine and guanine) and pyrimidines (cytosine, thymine and […]
Early Triassic Cyclidan Crustacean Had Powerful Jaws
by Enrico de Lazaro on March 17, 2026 at 1:51 am
Paleontologists have described a new species of enigmatic cyclidan crustacean on the basis of three well-preserved specimens from the Early Triassic Guiyang biota of China. The post Early Triassic […]
Neanderthals May Have Hunted Giant Elephants that Roamed across Prehistoric Europe
by Enrico de Lazaro on March 16, 2026 at 11:16 pm
Chemical clues preserved in the teeth of straight-tusked elephants (Palaeoloxodon antiquus) from the 125,000-year-old site of Neumark-Nord in Germany suggest these massive animals traveled hundreds […]
New Kind of Planet May Lurk in Milky Way: Extreme World of Magma and Sulfur
by News Staff on March 16, 2026 at 8:25 pm
New observations of L 98-59d, a member of the five-planet system L 98-59, suggest it harbors a vast global magma ocean that traps sulfur deep inside, forming a previously unrecognized class of […]
Tropical Bush Cricket’s Hot-Pink Phase May Be Nature’s Perfect Disguise
by Natali Anderson on March 16, 2026 at 6:31 pm
Entomologists in Panama have observed a leaf-masquerading katydid species that begins life bright pink before turning green days later, a shift that may mimic rainforest leaves that flush red or pink […]
Supergiant Star Makes Rare Leap to Hotter Phase, Astronomers Say
by News Staff on March 16, 2026 at 12:10 pm
Long-term observations of WOH G64 -- once considered the most extreme red supergiant star in its galaxy -- reveal that the star has undergone a dramatic transition, possibly shedding part of its […]
Sun May Have Escaped Milky Way’s Crowded Core Billions of Years Ago
by News Staff on March 14, 2026 at 12:55 am
Using a vast catalog of Sun-like stars built by ESA’s Gaia mission, astronomers have found strong evidence that our home star traveled outward with thousands of stellar counterparts roughly 4 to 6 […]
New Fossil Crocodile from Ethiopia Lived alongside Australopithecus afarensis
by News Staff on March 13, 2026 at 3:31 am
Paleontologists analyzing fossils from Ethiopia have described a previously unknown crocodile species that shared the landscape with a hominid species called Australopithecus afarensis. The post New […]
Early Howler Monkeys Adapted to Eating Leaves 13 Million Years Ago
by News Staff on March 12, 2026 at 2:38 am
Fossil jaws of the ancient monkey species Stirtonia victoriae from the La Victoria Formation in Colombia suggest that a shift toward leaf-eating allowed early primates in South America to grow larger […]
Astronomers Witness Aftermath of Catastrophic Planetary Collision
by News Staff on March 11, 2026 at 10:08 pm
An unusual flickering of a young F-type star called Gaia20ehk and an expanding cloud of dust around it suggest that a catastrophic planetary crash unfolded in real time, offering a rare glimpse of […]
New Research Links Daily Multivitamins to Slower Biological Aging
by News Staff on March 11, 2026 at 7:42 pm
In a randomized clinical trial of older adults, researchers found that taking multivitamins for two years modestly slowed epigenetic markers of aging -- equivalent to roughly four months less […]
Astronomers Observe Neutron Star Crash in Unexpected Environment
by News Staff on March 11, 2026 at 5:19 pm
Using NASA’s Chandra X-ray Observatory and other telescopes, astronomers have traced a short-duration gamma-ray burst event called GRB 230906A to a faint dwarf galaxy embedded in a vast stream of […]
Study: Raccoons Don’t Just Solve Puzzles for Food, They Do It for Fun
by News Staff on March 11, 2026 at 3:30 pm
In a new study led by University of British Columbia Ph.D. student Hannah Griebling, raccoons (Procyon lotor) continued manipulating complex puzzle boxes long after retrieving the only marshmallow […]
275-Million-Year-Old Amphibian Relative with Twisted Jaws Rewrites Early Tetrapod Diets
by News Staff on March 11, 2026 at 1:15 am
A new genus and species of archaic stem tetrapod from the Permian period has been identified from fossil jawbones found in Brazil. The post 275-Million-Year-Old Amphibian Relative with Twisted Jaws […]
Ancient Parrot DNA Points to Pre-Inca Animal Trade
by News Staff on March 11, 2026 at 12:25 am
Ancient DNA from brightly colored feathers found in Peru shows that at least four distinct species of Amazonian parrots -- the scarlet macaw (Ara macao), the blue-and-yellow macaw (Ara ararauna), the […]
VLT Discovers Third Gas Cloud near Milky Way’s Central Black Hole
by Enrico de Lazaro on March 10, 2026 at 10:27 pm
The newly-identified gas cloud, dubbed G2t, follows nearly the same orbit as two known clouds, suggesting they were all expelled by a pair of massive stars near the core of our Milky Way Galaxy. The […]
Two New Bird Species Identified in Amazonia
by Natali Anderson on March 10, 2026 at 1:09 am
An antbird long thought to be a single widespread species across the Amazon rainforest is, in fact, several different ones. Among them are two newly-described species -- Cercomacra mura and […]
3I/ATLAS is Unusually Rich in Methanol, ALMA Observations Show
by News Staff on March 9, 2026 at 10:26 pm
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have detected hydrogen cyanide (nitrogen-bearing organic molecule commonly seen in comets) as well as unusually high levels […]