Category: Science

Bystander T cells can steal the show in resolving inflammation

Bystander T cells can steal the show in resolving inflammation

New research reveals that bystander cell accumulation antagonizes rather than abets cell-killing by specific CTLs, curbing inflammation. The finding is noteworthy because that chief anti-inflammatory role has been traditionally ascribed to what are called regulatory T cells, or ‘Tregs,’ which dampen autoimmune responses. The new study challenges this notion and suggests alternate mechanisms can also be at work. …read more

High-sensitivity 3-D technique using single-atom measurements

High-sensitivity 3-D technique using single-atom measurements

Researchers have unveiled a stunningly accurate technique for scientific measurements which uses a single atom as the sensor, with sensitivity down to 100 zeptoNewtons. …read more

Arctic wintertime sea ice extent is among lowest on record

Arctic wintertime sea ice extent is among lowest on record

Sea ice in the Arctic grew to its annual maximum extent last week, and joined 2015, 2016 and 2017 as the four lowest maximum extents on record, according to scientists. …read more

Volcanic eruption influenced Iceland’s conversion to Christianity

Volcanic eruption influenced Iceland’s conversion to Christianity

Memories of the largest lava flood in the history of Iceland, recorded in an apocalyptic medieval poem, were used to drive the island’s conversion to Christianity, new research suggests. …read more

What do spacecraft, newborns and endangered shellfish have in common?

What do spacecraft, newborns and endangered shellfish have in common?

Researchers have developed a microbial detection technique so sensitive that it allows them to detect as few as 50-100 bacterial cells present on a surface. What’s more, they can test samples more efficiently — up to hundreds of samples in a single day. …read more

Individual education programs not being used as intended in special education

Individual education programs not being used as intended in special education

Gone are the days when students with disabilities were placed in a separate classroom, or even in a completely different part of the school. These students often sit alongside their traditional student peers for at least part of the day, with the help of individualized education programs (IEPs). …read more

Molecule that gives energy-burning brown fat its identity could lead to drugs for obesity

Molecule that gives energy-burning brown fat its identity could lead to drugs for obesity

A protein found in brown fat, but not typical white fat, is key to how the energy-burning brown fat cells function. …read more

A starfish cold case reopens, climate change remains suspect

A starfish cold case reopens, climate change remains suspect

As ocean temperatures rise and oceanic diseases proliferate, species like sea stars struggle to survive, and scientists are looking for underlying causes. To bring clarity to the sea star disease problem, the scientists propose a new, broad nomenclature. …read more

Toothpaste alone does not prevent dental erosion or hypersensitivity

Toothpaste alone does not prevent dental erosion or hypersensitivity

An analysis of nine toothpastes found that none of them protects enamel or prevents erosive wear. Specialists stress that diet and treatment by a dentist are key to avoid the problems originated by dentin exposure. …read more