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Scientists Date Prehistoric Bacterial Invasion Still Present in Today's Plant and Animal Cells
June 19, 2013 — How long ago did bacteria invade the one-celled ancestors of plants and animals to become energy-producing mitochondria and photosynthesizing chloroplasts? Researchers developed a statistical way to ... > full story -
Scientists Use DNA from a Museum Specimen to Study Rarely Observed Type of Killer Whale
June 19, 2013 — Researchers report using DNA from tissues samples collected in 1955 to study what may be a new type of killer whale (Orcinus ... > full story -
New Research Backs Genetic 'Switches' in Human Evolution
June 19, 2013 — A new study offers further proof that the divergence of humans from chimpanzees some 4 million to 6 million years ago was profoundly influenced by mutations to DNA sequences that play roles in ... > full story -
'Cold Snap' 116 Million Years Ago Triggered Marine Ecosystem Crisis
June 16, 2013 — A "cold snap" 116 million years ago triggered a similar marine ecosystem crisis to the ones witnessed in the past as a result of global warming, according to new research. The international study ... > full story -
Medieval Leprosy Genomes Shed Light on Disease's History
June 13, 2013 — Scientists have reconstructed a dozen medieval and modern leprosy genomes -- suggesting a European origin for the North American leprosy strains found in armadillos and humans, and a common ancestor ... > full story -
X-Rays Reveal New Picture of 'Dinobird' Plumage Patterns
June 11, 2013 — The first complete chemical analysis of feathers from Archaeopteryx, a famous fossil linking dinosaurs and birds, reveals that the feathers of this early bird were patterned -- light in colour, with ... > full story -
From Hot Springs to HIV, Same Protein Complexes Are Hijacked to Promote Viruses
June 10, 2013 — Biologists have discovered a striking connection between viruses such as HIV and Ebola and viruses that infect organisms called archaea that grow in volcanic hot springs. Despite the huge difference ... > full story -
New Theory Proposes Solution to Long-Running Debate as to How Stable the Earth System Is
June 10, 2013 — Researchers have proposed an answer to the long-running debate as to how stable the Earth system is. Earth, with its core-driven magnetic field, oceans of liquid water, dynamic climate and abundant ... > full story -
Ötzi the Iceman's Dark Secrets: Protein Investigation Supports Brain Injury Theory
June 10, 2013 — After decoding the Iceman's genetic make-up, a research team has now made another major breakthrough in mummy research: Using just a pinhead-sized sample of brain tissue from the world-famous glacier ... > full story -
Three-Billion-Year-Old Microfossils Include Plankton
June 6, 2013 — Spindle-shaped inclusions in three-billion-year-old rocks are microfossils of plankton that probably inhabited the oceans around the globe during that time, according to ... > full story
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