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A newly made RNA strand bolsters ideas about how life on Earth began

A newly made RNA strand bolsters ideas about how life on Earth began
A fundamental property of life is the ability to replicate itself. Researchers have now created the first molecules of RNA, DNA’s singled-stranded relative, that are capable of copying almost any other RNAs. The discovery bolsters the widely held view among researchers who study the origin of life that RNA likely preceded DNA as the central…
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There’s A Gene That Reverses Cellular Aging, And Now We Know How

There’s A Gene That Reverses Cellular Aging, And Now We Know How
In the biology lab-based equivalent of Indiana Jones and the Last Crusade, researchers from the University at Buffalo have uncovered the human body’s internal fountain of eternal youth, in the form of a gene called NANOG. When expressing this gene in aged stem cells, the team found that it reactivated certain processes that had become…
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Nottingham Dollies prove cloned sheep can live long and healthy lives

Nottingham Dollies prove cloned sheep can live long and healthy lives
Three weeks after the scientific world marked the 20th anniversary of the birth of Dolly the sheep new research, published by The University of Nottingham, in the academic journal Nature Communications has shown that four clones derived from the same cell line—genomic copies of Dolly—reached their 8th birthdays in good health. The video can be…
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Mouse eggs grown in lab dish

Mouse eggs grown in lab dish
This mouse may not look like anything special, but it’s the first of its kind. The egg cell used to create the rodent didn’t come from the ovaries of an adult mother, but were developed in a dish from egg precursor cells of a mouse fetus. To observe how sperm and egg cells form, researchers have…
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Our last common ancestor inhaled hydrogen from underwater volcanoes

Our last common ancestor inhaled hydrogen from underwater volcanoes
The chemical chain of events that led to the origin of life on Earth is likely forever lost to the mists of time. But some of our earliest ancestors—including the microbial Eve from which all modern cells descended—left behind traces in the genes they passed to their descendants. To track these shared genes, geneticists have…
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Phylogenetic Reconstruction of Sixty-Two Distinct Mammalian Families Based on Complete mtDNA Sequences (17,240 bp)

Phylogenetic Reconstruction of Sixty-Two Distinct Mammalian Families Based on Complete mtDNA Sequences (17,240 bp)
Includes: Aotidae, Atelidae, Balaenidae, Balaenopteridae, Bathyergidae, Bradypodidae, Bovidae, Caenolestidae, Callitrichidae, Camelidae, Canidae, Castoridae, Cebidae, Cercopithecidae, Cervidae, Chinchillidae, Chlamyphoridae, Cricetidae, Dasypodidae, Delphinidae, Didelphidae, Dugongidae, Elephantidae, Equidae, Eupleridae, Felidae, Giraffidae, Herpestidae, Hippopotamidae, Hominidae, Hyaenidae, Indriidae, Iniidae, Kogiidae, Lemuridae, Leporidae, Lipotidae, Macropodidae, Megalonychidae, Muridae, Mustelidae, Myrmecophagidae, Ornithorhynchidae, Orycteropodidae, Otariidae, Phalangeridae, Phascolarctidae, Phocidae, Pitheciidae, Procyonidae, Physeteridae, Pteropodidae, Rhinocerotidae, Rhinolophidae,…
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Climate Change Does Have Some Winners, Like Brain-Eating Parasites

Climate Change Does Have Some Winners, Like Brain-Eating Parasites
It’s a myth there are no big winners from climate change besides fossil fuel companies. According to one study, global warming is doubling bark beetle mating, triggering up to 60 times as many beetles attacking trees every year. The decline in creatures with shells thanks to ocean acidification “could trigger an explosion in jellyfish populations.”…
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Fish may have evolved to live on land more than 30 times

Fish may have evolved to live on land more than 30 times
The first fish that stepped onto land more than 350 million years ago wasn’t a fluke. Our ocean friends may have evolved the ability to come out of the water at least 30 times over the ages, according to a new study of the diversity of amphibious fish alive today. The work highlights the factors…
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