US researchers have estimated that replacing conventional building materials in new infrastructure with CO₂ capturing alternatives - such as mixing carbon aggregates into concrete or using bio-based materials in bricks - could store billions of tonnes of carbon dioxide per year. According to the study, published in the journal Science, the move could help meet greenhouse gas emission reduction targets.

An assessment of the extinction risk of freshwater fauna, covering more than 23,000 species, reveals that around 24% of the species studied are at risk of extinction. The analysis, published in Nature, identifies the main threats from pollution, dams, agriculture and invasive species. Decapods - such as freshwater crabs and shrimps - have the highest percentage of threatened species (30 %), followed by freshwater fish (26 %) and odonates - such as dragonflies (16 %).

A team led by the CEU San Pablo University has analysed the role of vaccination against influenza on the risk of infection and mortality. The meta-analysis, published in European Respiratory Review, includes 192 articles from different countries over the last 20 years and includes data from more than 6.5 million patients. The results show that the level of protection varies according to age group and influenza subtype. Although it does not reduce the risk of infection for influenza A H3N2 in those over 65 years of age, nor does it show a reduction in mortality for influenza B - which is less associated with mortality than influenza A - overall, vaccination is shown to be effective in both preventing infection and reducing mortality.

People who grow up with more brothers or sisters may have a more cooperative personality, i.e. with traits such as honesty, humility and agreeableness, according to a study published in PNAS. Using data from 700,000 adults surveyed online, the research concludes that mean honesty-humility and agreeableness scores are slightly higher in people with more siblings. Among those with the same number of siblings, people born middle and last have a slightly higher mean score than firstborns.

According to a meta-analysis of 14 studies involving more than 25,000 people, drinking more than four cups of coffee per day was associated with a lower incidence of head and neck tumors. Drinking between none and one cup of tea was also associated with a slightly decreased risk, although daily consumption of more than one cup of tea was associated with an increased risk of developing laryngeal cancer. The results are published in the journal Cancer. 

A team in the US has for the first time achieved quantum teleportation over 30 kilometres of fibre-optic cable already carrying internet data traffic, says a study published in the journal Optica. This type of teleportation would allow quantum communication to be combined with existing internet cable infrastructure. 

In a group of people at high cardiovascular risk, low to moderate wine consumption was associated with fewer cardiovascular events (cardiovascular death, myocardial infarction, stroke or heart failure), according to a study. The analysis uses urinary concentrations of tartaric acid, a substance found in grapes and grape derivatives, as a biomarker of wine consumption. It finds that consuming between three and 35 glasses per month was associated with fewer cardiovascular events than in people who consumed fewer than three or more than 35 glasses. The study, published in the European Heart Journal, included more than 1,200 participants from Spain's PREDIMED study with an average age of 68 years.

A meta-analysis published in The Lancet Psychiatry compared various pharmacological and non-pharmacological treatments for Attention Deficit Hyperactivity Disorder (ADHD) in adults. The authors found that only stimulants and atomoxetine effectively reduce symptoms after 12 weeks, but warn that the drugs are not well tolerated by everyone, that they found no evidence that they improve quality of life and that their long-term effects are unclear.

In 2015, the human health impact of exposure to certain chemicals cost the equivalent of $1.5 trillion, says a study published in PNAS. The study estimates cases of ischaemic heart disease and stroke associated with bisphenol A (BPA) exposure; deaths of 55-64 year olds associated with di(2-ethylhexyl) phthalate (DEHP) exposure; and cognitive losses in children of mothers exposed to brominated flame retardants (PBDEs).

Thirty eight scientists from different specialties, including Craig Venter, a pioneer in the creation of artificial synthetic life, have written an article in the journal Science in which they assess the possibilities of synthesizing mirror organisms, but also warn of the risks they pose. This type of microorganisms, which would present a mirror structure to that currently found in nature, would have potential applications due to their resistance to biological degradation. However, they would also pose a danger because they would not be recognized by our defenses and could spread in ecosystems. Scientists call for more research and a broad debate, and warn that until more is known, this type of organism should not be created.