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Illustration of a clock in a spiral

Physics

Time loops may not be forbidden by physics after all

Physicists find that causal loops, where two events separated in time influence each other in paradoxical ways, are allowed in many theoretical universes, some of which share features with our own

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Deepwater disaster

Environment

Deepwater Horizon oil spill did no harm to BP's long-term share value

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Human brain scans

Health

Parts of the brain form a circuit that may fuel smoking addiction

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A stock image of chromosomes

Health

Genetic errors cause most miscarriages, confirms largest study yet

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An employee looks over a patient's file at the Hope Medical Group for Women in Shreveport, Louisiana, April 19, 2022. - On September 1, 2021, one of the most restrictive anti-abortion laws in the country went into effect in the Republican state of Texas, prohibiting all voluntary termination of pregnancy (abortion) from the time a fetal heartbeat is visible on ultrasound, about four weeks after fertilization. With a population of 30 million, Texas is the second most populous state in the country and this law has driven patients to the rapidly overflowing clinics of other states, forcing them to inexorably delay their abortion due to lack of space. (Photo by Fran??ois Picard / AFP) (Photo by FRANCOIS PICARD/AFP via Getty Images)

Health

Changing US abortion laws could dangerously restrict miscarriage care

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A rethink of cause and effect could help when things get complicated

Mathematics

A rethink of cause and effect could help when things get complicated

Features

Harvest mice (Micromys minutus)

Life

Female mice release banana-scented urine when pregnant to deter males

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A dolphin rubs against medicinal coral

Video

Dolphins queue up to rub against corals with antibacterial properties

Video

Pregnant Woman Smoking E Cigarette

Health

Vaping may be an effective way to quit smoking during pregnancy

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Bottlenose dolphins being fed

Life

Dolphins who are hand-fed by tourists are less social than their peers

Tourists can hand-feed some dolphins around the coast of Australia, but dolphins fed this way are less likely to form strong social bonds with their peers

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Environment

How the war in Ukraine will change the way the world uses energy

Insight

Humans

Family tree of extinct apes reveals our early evolutionary history

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Health

RSV vaccine in pregnancy lowers antibiotic use in babies

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Environment

EU lays out plan to cut Russian gas imports by two-thirds in 2022

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