Three-dimensional computer simulations have solved the mystery of why doomed stars explode at all.
Using sea charts and satellites, the effort will trace how the kelp beds are changing in response to global warming and commercial harvesting.
And what does that mean for making a little wire LED man light up?
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Catch up on the most important updates from this week.
No one was calling it a pandemic yet, at least publicly. Then came more troubling evidence about transmission, as the US ignored warning signs.
Scientists say they've got 20-million-year-old evidence of giant worms that hunted in pretty much the most nightmarish way possible.
Using voice-activation tech and nature-inspired soundscapes, these space are designed to give medical workers some respite from the Covid-19 front lines.
Biden’s first-day actions signal that he’s serious about global warming. But he’s got to make up for four years of lost time.
It won't prevent teens from later becoming smokers. But some health experts say that focusing on the risk of addicting new smokers cuts off a chance to help adults quit.
It’s not just about the pandemic. How the new administration handles Covid-19 will be a test of every one of its policies—and its values.
When humans over-exploit underground water supplies, the ground collapses like a huge empty water bottle. It's called subsidence, and it could affect 1.6 billion people by 2040.
An algorithm discovered dozens of Martian craters. It’s a promising remote method for exploring our solar system and understanding planetary history.
If you’re thinking, “Oh, I just need to suck it up,” stop. What you’re feeling is real. Here’s how to cope.
The robo-vessel will map the ocean floor, and its solar-powered sensors will sample fish DNA and collect climate data.
Reopening in the fall was a massive gamble. At one high-poverty elementary school, navigating the risks paid off.
Launching rockets from planes is a decades-old concept that never really took off. Billionaire Richard Branson thinks its time has come.
Imagine if we lived on a cube-shaped Earth. How would you find the shortest path around the world?
If the dots on the loading screen were planets, is their motion realistic? And can we actually model it?
In botanic gardens around the world, the reproductive future of the famously smelly plant is threatened. A new collaborative program wants to save it.
Catch up on the most important updates from this week.
From 11 November to 28 December, 2020 a total of 67 suspected cholera cases presenting with diarrhea and vomiting, including two deaths a case fatality ratio (CFR: 3%) were reported from the municipalities “Golfe 1” and “Golfe 6” in Lomé, Togo. A total of four health areas (Katanga, Adakpamé, Gbétsogbé in Golfe 1, and Kangnikopé in Golfe 6) in the affected municipalities reported at least one case.
On 17 November, cholera was confirmed by culture in the laboratory of the National Institute of Hygiene (INH) in Lomé, Togo and WHO was informed. On 19 November, the Minister of Health, Public Hygiene and Universal Access to Care of Togo issued a press release declaring a cholera outbreak and on 24 November WHO was officially notified. From 11 November to 28 December 2020, a total of 17 out of 41 stool samples tested positive for Vibrio cholerae O1 serotype Ogawa by culture in the National Institute of Hygiene (INH) in Lomé, Togo.
On 15 December 2020, the Brazil Ministry of Health reported the second confirmed human infection with influenza A(H1N2) variant virus [A(H1N2)v] in Brazil in 2020.
The World Health Organization (WHO) today listed the Comirnaty, COVID-19 mRNA vaccine for emergency use, making the Pfizer/BioNTech vaccine the first to receive emergency validation from WHO since the outbreak began a year ago.
SARS-CoV-2, the virus that causes COVID-19, has had a major impact on human health globally; infecting a large number of people; causing severe disease and associated long-term health sequelae; resulting in death and excess mortality, especially among older and vulnerable populations; interrupting routine healthcare services; disruptions to travel, trade, education and many other societal functions; and more broadly having a negative impact on peoples physical and mental health. Since the start of the COVID-19 pandemic, WHO has received several reports of unusual public health events possibly due to variants of SARS-CoV-2. WHO routinely assesses if variants of SARS-CoV-2 result in changes in transmissibility, clinical presentation and severity, or if they impact on countermeasures, including diagnostics, therapeutics and vaccines. Previous reports of the D614G mutation and the recent reports of virus variants from the Kingdom of Denmark, the United Kingdom of Great Britain and Northern Ireland, and the Republic of South Africa have raised interest and concern in the impact of viral changes.
A variant of SARS-CoV-2 with a D614G substitution in the gene encoding the spike protein emerged in late January or early February 2020. Over a period of several months, the D614G mutation replaced the initial SARS-CoV-2 strain identified in China and by June 2020 became the dominant form of the virus circulating globally. Studies in human respiratory cells and in animal models demonstrated that compared to the initial virus strain, the strain with the D614G substitution has increased infectivity and transmission. The SARS-CoV-2 virus with the D614G substitution does not cause more severe illness or alter the effectiveness of existing laboratory diagnostics, therapeutics, vaccines, or public health preventive measures.
In his end of year message for 2020, WHO Director-General says there is light at the end of the tunnel in the fight against COVID-19. But going into 2021, he urges countries and communities to work together, in solidarity, to overcome this and future health challenges.
From October to December 2020, a total of seven confirmed cases of yellow fever (YF) have been reported from four health districts in three regions in Senegal.