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Swabbing dolphin mouths reveals bacterial ‘dark matter’

Researchers have found two previously unknown phyla of bacteria inside the mouths of dolphins. A phylum is a broad taxonomic rank that groups together organisms that share a set of common characteristics due to common ancestry.

How to decide when to buy LED light bulbs

A new study recommends replacing all incandescent and halogen light bulbs in your home now with compact fluorescent lamps (CFLs) or LEDs.

Ancient North Americans played high-stakes games

From games of chance to tests of physical skill, ancient North America Indians took their sport and recreation seriously, research shows.

To prevent eczema, promote breastfeeding?

Babies whose mothers had received support to breastfeed exclusively for a sustained period from birth have a 54 percent lower risk of eczema at the age of 16, a new study shows.

3D-printed ‘schwarzites’ could build all kinds of stuff

Engineers are using 3D printers to turn largely theoretical structures into strong, light and durable materials with complex, repeating patterns.

Gene mutation extends life and health of some Amish

Scientists have discovered the first genetic mutation that appears to protect against multiple aspects of biological aging in humans in an extended family of Old Order Amish living in the vicinity of Berne, Indiana.

Even a little activity may lower older women’s death risk

Older women who engage in light physical activity, even as light as doing household chores, each day may have a lower risk of death, researchers report.

Kevlar and water make artificial cartilage super strong

Researchers have created a new kind of artificial cartilage using Kevlar, the same material in bulletproof body armor.

People with unclogged arteries have more of this protein

Researchers have found that older adults with unclogged, healthy arteries have much higher levels of a protein called CXCL5.

Algae material makes pollution-fighting particle less toxic

A nanoparticle that can help clean water of cadmium becomes toxic once taking in the metal. But research finds that organic matter, in this case from algae, reduces that toxicity.

Algorithm outdoes radiologists at spotting pneumonia in X-rays

A new algorithm called ChexNet can diagnose pneumonia from chest X-rays, researchers report. The algorithm can diagnose up to 14 types of medical conditions and is able to diagnose pneumonia better than expert radiologists working alone.

These tests can’t really say how fast you’re aging

Whether it’s an online quiz, a $300 chromosome test, or an $800 blood panel, a lot of people seem to be interested in whether they’re aging faster or slower than their chronological age would suggest.

To transfer genetic info using DNA, just ‘zip’ it

Researchers have created a method for transferring large amounts of genetic information into a cell by compressing DNA, then having it decompress once inside the target cell.

Watch: Cuts and dunks don’t stop new lithium-ion battery

A new bendable lithium-ion battery prototype continues delivering electricity even when cut into pieces, submerged in water, or struck with force.

As electronics shrink, add wrinkles to pillared graphene?

Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, report engineers.

Biocatalysts could be powerful tools for chemists

New research is building a bridge from nature’s chemistry to greener, more efficient synthetic chemistry.

This ‘ruler’ measures muscle filaments perfectly

Researchers have found definitive proof that a protein called titin acts as a “ruler” for thick filaments, the proteins that make muscles contract.

‘Intentional’ teaching has big impact on preschoolers

The instructional practices of preschool teachers may have the largest effect on young children’s social and academic skills, a new review of research on several measures of the quality of early childhood education suggests.

Material with helium ‘veins’ paves way for fusion reactors

Researchers have discovered a method for making materials that could be useful in future fusion reactors.

Heavy metal found in meteoroids kills cancer cells

Iridium—the world’s second densest metal—can kill cancer cells by filling them with a deadly version of oxygen, while leaving healthy tissue unharmed.