Today's selection of science news. Links are normally to press releases on EurekAlert (at the bottom end I may also add a couple of newspaper stories). I include quotes from the summary in italics in cases where the title alone doesn't reveal what the story is about. My own thoughts appear without italics if I have any.
Chemical evolution -- One-pot wonder
Before life, there was RNA: Scientists at Ludwig-Maximilians-Universitaet (LMU) in Munich show how the four different letters of this genetic alphabet could be created from simple precursor molecules on early Earth -- under the same environmental conditions.
Liquifying a rocky exoplanet
A hot, molten Earth would be around 5% larger than its solid counterpart. This is the result of a study led by researchers at the University of Bern. The difference between molten and solid rocky planets is important for the search of Earth-like worlds beyond our Solar System and the understanding of Earth itself.
Warm ocean water attacking edges of Antarctica's ice shelves
Meet Siamraptor suwati, a new species of giant predatory dinosaur from Thailand
Hush, little baby: Mother right whales 'whisper' to calves
A recent study led by Syracuse University biology professor Susan Parks in Biology Letters explores whether right whale mother-calf pairs change their vocalizations to keep predators from detecting them.
A unique study sheds light on the ecology of the glacial relict amphipod Gammaracanthus lacustris
climate change is a threat to the amphipod Gammaracanthus lacustris: as adapted to cold waters the species is not likely to survive in warmer waters.
The University of Jyväskylä/Jouni Taskinen
Tuberculosis: New insights into the pathogen
Antibiotic resistance in food animals nearly tripled since 2000
Humans have salamander-like ability to regrow cartilage in joints
Study finds prehistoric humans ate bone marrow like canned soup 400,000 years ago