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Health

Legal marijuana in the US may be less potent than packaging claims

Tests of marijuana sold legally in Colorado found that most products contained significantly less THC, the main psychoactive component, than was listed on the packaging

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Solar panels and wind turbines at a new solar park near Prenzlau, Germany

Environment

Emissions from global electricity generation may have now peaked

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Health

Genetic conflict with the fetus influences when women give birth

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Life

Stunning image shows the developing nervous system in a chick embryo

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Health

Drug overdose deaths have quadrupled among older US adults

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rippled graphene with dissociated hydrogen atoms on top

Chemistry

Graphene with ripples could help make better hydrogen fuel cells

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An embryo developing in the uterus at 8 weeks, 9 weeks and 10 weeks

Health

Miscarriages may be more likely to occur with slow developing embryos

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Health

Maternal mortality rate in the US rose drastically in 2021

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A transmission electron micrograph of HIV virus particles (pink) replicating from the plasma membrane of an infected immune cell

Health

Umbilical blood stem cell transplant puts woman in HIV remission

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Health

Caffeine linked to lower BMI and reduced risk of type 2 diabetes

Genetic differences in how people metabolise caffeine may influence how overweight they are, but this doesn't mean drinking more coffee will make you slimmer

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Environment

US approves controversial Willow oil drilling project in Alaska

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Health

Changes to surrogacy laws must consider future reproductive technology

Comment

Chemistry

Soil bacteria enzyme generates electricity from hydrogen in the air

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Health

Covid-19 vaccines during pregnancy protect newborns from infection

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