Dallas has a network of 178 sirens that warn people about dangerous weather. They are not only for tornadoes but also for strong winds, large hail and other emergencies. The city follows five rules to decide when to sound the sirens: a tornado warning from the National Weather Service, a severe thun
Plants use a tagging system called ubiquitination to control the life span of many proteins. In the case of phenylpropanoid production, which supplies important compounds like lignin and flavonoids, several enzymes are marked for destruction by this system. F‑box proteins act as the taggers. They
It is rare to find a moment that feels like the right time and place for love. A woman who usually keeps her private life close to her chest has a secret she saved for herself. Now, on Valentine’s Day weekend, she finally shares it. She met a man after a work meeting with an older gentleman w
The western United States is about to get a lot of rain and some snow. A big change in the weather pattern has made this possible. Early Saturday, a storm will move across the Pacific Ocean and reach northern California and parts of Oregon. It will bring heavy rain to those areas. By Sun
During the Winter Games, athletes seemed to treat Valentine’s week like a sprint, racing through free condom supplies and emptying dispensers before the competition began. Organisers had handed out about 10, 000 condoms across city and mountain venues to encourage safe habits among the mostly young,
Eileen Gu, the 22‑year‑old Chinese athlete who won silver in slopestyle earlier this week, expressed disappointment after the International Ski and Snowboard Federation (FIS) refused to adjust her training timetable for the halfpipe event. She is the only woman competing in all three freestyle di
Heart disease tops the list of causes of death in the U. S. , yet many problems that lead to it can be stopped with everyday choices. Doctors say that even people who run in their family history can change their outlook on heart health by adopting a few smart habits. One of the biggest changes is w
A long study followed almost 3, 000 older adults for twenty years. Only one type of brain exercise stood out: “speed training. ” These games asked participants to spot and move on visual clues quickly. Those who did the initial five‑week program and then had refresher sessions at about one
The Daytona International Speedway is shifting the start of the 500‑mile race one hour earlier. The new green flag will rise at 2:13 p. m. Eastern, a change driven by the chance of bad weather on Sunday. Weather forecasts show that clouds and rain could roll in during the afternoon. Moving the star
In 2018, two scientists walked deep into a remote part of the Carlsbad Caverns in New Mexico. They found walls covered with a bright green substance that could not have been reached by any visible light. The green coating is made of tiny cyanobacteria that use two uncommon pigments, chlorophyl
