To determine whale pregnancy, researchers have relied on visual cues or hormone tests of blubber collected via darts, but the results were often inconclusive. Research points to a weakness of previous testing and evaluation methods and provides a new hormone testing regime that offers better results.

In a comparison of 0.25mg/kg and 0.40mg/kg doses of the newer and more convenient clot-busting medication tenecteplase, there was no advantage in increasing the dose above 0.25mg/kg in stroke patients who planned to have mechanical clot retrieval. In addition, administering tenecteplase may decrease the need for mechanical clot removal.

After 50 years of research and the testing of over 1,000 drugs, there is new hope for preserving brain cells for a time after stroke. Treating acute ischemic stroke patients with an experimental neuroprotective drug, combined with a surgical procedure to remove the clot improves outcomes as shown by clinical trial results.

A team took a novel, interdisciplinary approach to analyzing the behavior of breast tumor cells by employing a statistical modeling technique more commonly used in physics and economics. The team was able to demonstrate how the diversity, or heterogeneity, of cancer cells can be influenced by their chemical environment -- namely, by interactions with a specific protein, which leads to tumor...

Enough water will come from the ground as a byproduct of oil production from unconventional reservoirs during the coming decades to theoretically counter the need to use fresh water for hydraulic fracturing operations in many of the nation's large oil-producing areas. While other industries might want to recycle some of that water for their own needs, water quality issues and the potential costs...

A growing body of research shows that birds' spring migration has been getting earlier and earlier in recent decades. New research on Black-throated Blue Warblers, a common songbird that migrates from Canada and the eastern US to Central America and back every year, uses fifty years of bird-banding data to add another piece to the puzzle, showing that little-studied fall migration patterns have...

The monkeyflower, or Mimulus, though possessing a relatively simple genome is able to produce a stunning array of pigmentation patterns. A team of researchers is one step closer to understanding exactly how this genus of wildflowers is able to achieve such remarkable diversity.

Using a machine-learning algorithm, researchers have identified a powerful new antibiotic compound. In laboratory tests, the drug killed many of the world's most problematic disease-causing bacteria, including some strains that are resistant to all known antibiotics. It also cleared infections in two different mouse models.

The ability to recognize objects across different senses is present in the tiny brains of an insect, researchers have discovered.

Scientists show for the first time that a newer type of CRISPR, called base-editing, can safely cure cystic fibrosis in stem cells derived from patients.

Scientists find that normal intestinal cells 'de-differentiate' en masse into stem cells that generate the cells needed for a healthy intestinal lining. New study establishes de-differentiation as the predominant mode of stem cell recover in the intestine.

Researchers describe the science behind creating lighting to make us all happy and productive indoors. A company is using the technology to create commercial lightbulbs available later this year.

Superbug infections kill 35,000 people in the US annually. A team of researchers has found that a treatment known as AB569 kills pseudomonas aeruginosa in humanized cells in mouse models. The treatment does not harm these humanized cells.

Scientists have made an important discovery with implications for those living with a common, debilitating eye disease (age-related macular degeneration, AMD) that can cause blindness. They have discovered that the molecule TLR2, which recognises chemical patterns associated with infection in the body, also seems to play an important role in the development of retinal degeneration. When TLR2 is...

New work shows how using next-generation DNA sequencing on ancient packrat middens -- nests made out of plant material, fragments of insects, bones, fecal matter, and urine -- could provide ecological snapshots of Earth's past. The study may pave the way for scientists to better understand how plant communities -- and possibly animals, bacteria, and fungi as well -- will respond to human-caused...

To combat supply chain counterfeiting, which can cost companies billions of dollars annually, researchers have invented a cryptographic ID tag that's small enough to fit on virtually any product and verify its authenticity.

Researchers have invented a new method -- using ultraflat gold films -- to disassemble vdW single crystals layer by layer into monolayers with near-unity yield and with dimensions limited only by bulk crystal sizes. The monolayers have the same high quality as those created by conventional 'Scotch tape' exfoliation, but are roughly a million times larger. They can be assembled into macroscopic...

Investigators successfully measure brain temperature in newborn babies undergoing therapeutic cooling, showing that the treatment effectively targets the core of the brain.

A first cell atlas of the human thymus gland could lead to new immune therapies to treat cancer and autoimmune diseases. Researchers mapped thymus tissue through the human lifespan to understand how it develops and makes vital immune cells called T cells. In the future, this information could help researchers to generate an artificial thymus and engineer improved therapeutic T cells.

A new study documented the earliest known interbreeding event between ancient human populations -- a group known as the 'super-archaics' in Eurasia interbred with a Neanderthal-Denisovan ancestor about 700,000 years ago. The event was between two populations more distantly related than any other recorded. The authors proposed a revised timeline for human migration out of Africa and into Eurasia....

These latest Hubble observations of the Sombrero galaxy indicate only a tiny fraction of older, metal-poor stars in the halo, plus an unexpected abundance of metal-rich stars. Past major galaxy mergers are a possible explanation, though the stately Sombrero shows none of the messy evidence of a recent merger of massive galaxies.

Research has provided new insights into why people often make unrealistic plans that are doomed to fail.

In a first for quantum physics, researchers have 'held' individual atoms in place and observed previously unseen complex atomic interactions.

Study finds microbes can alter an environment dramatically before dying out.