One of the world’s most congested cities just opened its first metro line

(CNN) — Bangladesh on Wednesday launched its first metro rail service in the capital Dhaka, with officials and commuters hopeful it will help ease traffic in one of the world’s most densely populated and congested cities. The largely Japanese-funded project, known as Line 6, was inaugurated at a ceremony by…

Live updates: Russia’s war in Ukraine

As fighting near the key Ukrainian city of Kreminna in the eastern Luhansk region continues, Russian civilians who had come to the city have stopped their work and left, Serhiy Hayday, head of the Luhansk region military administration, said Wednesday in a television interview.  “The military command has indeed moved [from…

More than 200 cars involved in massive pileup in China’s Zhengzhou | CNN

CNN  —  One person was killed during a massive pileup involving more than 200 vehicles in the central Chinese city Zhengzhou on Wednesday, according to state media. The pileup took place on a bridge that was shrouded in heavy morning fog, which caused multiple vehicles to crash, according to state-owned…

Girl, 5, saves younger brother’s life after car crash kills parents | CNN

CNN  —  A 5-year-old girl saved her baby brother’s life after a car crash killed their parents, leaving three young children trapped in the wreckage for more than two days in a remote part of rural Western Australia, CNN affiliate Nine News reported. In a statement, Western Australia Police said…

2015 Charlie Hebdo Attacks Fast Facts | CNN

CNN  —  Here is a look at the January 2015 terror attacks in Paris. From January 7 to January 9, a total of 17 people were killed in attacks on the satirical magazine Charlie Hebdo, a kosher grocery store and the Paris suburb of Montrouge. Three suspects in the attacks…

A glimpse of a cell’s sense of touch

A research team at the Cluster of Excellence Physics of Life of TU Dresden and the University of California, Santa Barbara, reveals how cells sense their mechanical environment as they build tissues during embryogenesis. Building tissues and organs is one of the most complex and essential tasks that cells must…

Tissue-specific immunity may be the future, if we can first learn its rules

Recent pressure to maximize vaccine efficacy has stirred up many new discoveries within immunology, revealing numerous paradigms with untapped therapeutic potential. One growing branch of research is focused on tissue-resident memory T cells (TRM cells), a type of immune cell that provides long-lasting protection against pathogens attacking specific organs and…

Alveolar macrophages help CD8+ T cells go (anti-)viral

The human immune system is a highly complex network of cells, signals, and responses that is tightly regulated to ensure that the body can fight off infection without damaging its own tissues. Now, researchers from Japan report a new way in which the immune system protects lung tissue from viral…

Good and bad feelings for brain stem serotonin

New insights into the opposing actions of serotonin-producing nerve fibres in mice could lead to drugs for treating addictions and major depression. Scientists in Japan have identified a nerve pathway involved in the processing of rewarding and distressing stimuli and situations in mice. The new pathway, originating in a bundle…

Enzyme that protects against viruses could fuel cancer evolution

An enzyme that defends human cells against viruses can help drive cancer evolution towards greater malignancy by causing myriad mutations in cancer cells, according to a study led by investigators at Weill Cornell Medicine. The finding suggests that the enzyme may be a potential target for future cancer treatments. In…

Russian troops fighting in Ukraine can freeze their sperm for free | CNN

CNN  —  Russian soldiers taking part in the war on Ukraine will be eligible for free sperm freezing and storage in cryobanks, Russia’s state news agency Tass reported, citing a lawyers union. “The families of those called up for military service as part of the partial mobilization will receive free…

The world’s ‘best’ villages for tourism have been announced

(CNN) — Travel has changed in many ways since the pandemic started, but one change for the better is the new push towards rural tourism. Where before we were intent on ticking off yet another city break, in lockdown we started dreaming of the great outdoors — and that still…

Former Pope Benedict is ‘very sick’, Pope Francis says | CNN

Rome CNN  —  Pope Francis has said that his predecessor Pope Benedict, the 95-year-old former pontiff who resigned from the post nine years ago, is “very sick” after a deterioration in his health on Wednesday. “I want to ask you all for a special prayer for Pope Emeritus Benedict who…

New biomarker test can detect Alzheimer’s neurodegeneration in blood

A group of neuroscientists led by a University of Pittsburgh School of Medicine researcher developed a test to detect a novel marker of Alzheimer’s disease neurodegeneration in a blood sample. A study on their results was published today in Brain. The biomarker, called “brain-derived tau,” or BD-tau, outperforms current blood…