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Threatened and endangered species were among the dead, likely poisoned overnight by a chlorination system used to decontaminate the animals’ tank water.

No deaths had previously been associated with the muscle-wasting treatment Zolgensma.

Thirteen people with the illness have tested negative for Ebola and Marburg. The Tanzanian government continues to investigate the source.

Health Canada has given the single COVID-19 shot the official greenlight for use in people 18 and older.

Ebola virus was detected in samples from a child who died last week, the World Health Organization and Democratic Republic of the Congo’s Ministry of Health announce.

After a nearly 30-year hunt, researchers have shown that a neurotoxin generated by cyanobacteria on invasive plants is responsible for eagle and waterbird deaths from vacuolar myelinopathy.

Stephen Raverty of the Ministry of Agriculture in Canada and Joseph Gaydos of UC Davis speak with The Scientist about their recent study assessing the causes of orca deaths.

The authors of a new analysis conclude that tens of thousands of lives could have been saved with a more coordinated national response to the coronavirus.

Tests point to a toxic algal bloom that might have led to the unprecedented deaths of hundreds of African elephants in Botswana earlier this year, but the evidence isn’t conclusive.

An online conspiracy theory retweeted by President Donald Trump misconstrued data regarding the number of people who have died from the coronavirus.

After combing through data on public death notices in Minas Gerais state, scientists say the coronavirus death toll in the country is worse than reported.

It can take days for each death to be recorded in official statistics. “Nowcasting” estimates the actual occurrence of deaths, and the true peak of the pandemic.

The symptoms suggest SARS-CoV-2 might infect neurons, raising questions about whether there could be effects on the brain that play a role in patients’ deaths, but the data are preliminary.

The decline in total occupied forest may not equate to an overall loss in butterfly numbers, but scientists are still concerned that their populations are suffering.

Experts warn that an explosion of hooded vulture deaths in Guinea-Bissau could push the critically endangered species to the brink of extinction.

China and Japan have also closed their schools, prompting universities worldwide to assess the threat this virus poses to their local and international communities.

In a small trial of deceased volunteers, a Seattle-based company called Recompose demonstrates that its method for “natural organic reduction” of a human body completely breaks down soft tissue.

Scientists speak up about landmark drug approvals, political and environmental activism, and the redefinition of death.