289 articles from THURSDAY 4.6.2020

NASA ocean ecosystem mission preparing to make waves

NASA's Plankton, Aerosol, Cloud, ocean Ecosystem mission, or PACE, has successfully passed its design reviews and moved into its construction and testing phase, preparing to advance the fields of global ocean and atmospheric science when it launches in 2023.

Covid-19: Lancet retracts paper that halted hydroxychloroquine trials

Retraction made after Guardian investigation found inconsistencies in dataHow doubt snowballed over Covid-19 drug researchCoronavirus – latest updatesSee all our coronavirus coverageThe Lancet paper that halted global trials of hydroxychloroquine for Covid-19 because of fears of increased deaths has been retracted after a Guardian investigation found inconsistencies in the data.The lead author,...

NASA infrared imagery indicates Cristobal's heavy rainmaking capabilities

One of the ways NASA observes tropical cyclones is by using infrared data that provides temperature information and indicates storm strength. The AIRS instrument aboard NASA's Aqua satellite gathered that data and revealed Cristobal has the potential to generate heavy rainfall. That rainfall is now soaking Mexico and portions of Central America as Cristobal meanders.

Adult neurogenesis essential for sleep-induced memory consolidation in mice

Adult neurogenesis, in which new neurons are generated within the hippocampus in the fully developed adult brain, occurs in mice -- but how new neurons are functionally integrated into existing brain circuitry has remained largely unknown. A study now shows an important new role for neurons generated during adulthood in consolidating memories during sleep in mice.

Eat less and live a long healthy life? Study shows 'not in all cases'

The assumption that dietary restriction (and drugs that mimic its effects) will extend both lifespan and healthspan jointly has come under question, based on research involving 160 genetically distinct strains of fruit fly. Noting that results may foreshadow what will happen in humans eating a Spartan diet, researchers report that thirteen percent of the strains were more vigorous, yet died sooner...

Mangrove trees won't survive sea-level rise by 2050 if emissions aren't cut

Mangrove trees -- valuable coastal ecosystems found in Florida and other warm climates - won't survive sea-level rise by 2050 if greenhouse gas emissions aren't reduced, according to a new study. Using sediment data from the last 10,000 years, an international team estimated the chances of mangrove survival based on rates of sea-level rise.

High-protein diets help insects to fight against blood parasites

Scientists studying insects have identified a crucial biological mechanism responsible for increasing their survival against blood parasites. The finding, in which a high protein diet is linked to increased survival, could be a key stepping-stone to discovering how diet could help us fight parasitic blood infections.

Sleep, death and ... the gut?

A new study finds a causal link between sleep deprivation and death. In sleep-deprived fruit flies, death is preceded by the accumulation of molecules known as reactive oxidative species in the gut. When fruit flies were given antioxidant compounds that neutralize ROS, sleep-deprived flies remained active and had normal lifespans. The findings may one day inform new approaches to counteract the...

Restoring vision by gene therapy

Macular degeneration is one of the major reasons for visual impairment. Scientists have now developed a therapeutic approach based on gene therapy. They managed to activate degenerated photoreceptors using near-infrared light.

Mothers ensure their offspring's success through epigenetics

Parents pass genes along to their offspring which equip them for their future life. In recent years, research has shown that the reality is much more complex and that parents endow much more than just genes. A new study reveals that active epigenetic modifications are also passed from one generation to the next.