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This illustration provided by Alex Boersma in July 2020 depicts a Kongonaphon kely, a tiny relative of dinosaurs and pterosaurs. Kongonaphon lived roughly 237 million years ago and would have stood only 10 centimeters (4 inches) tall. (Alex Boersma via AP) 264

Thursday marks six months since the World Health Organization declared COVID-19 a global health emergency. The coronavirus is only the sixth time a global health emergency has been declared.Compared to the previous five emergencies, experts say the coronavirus pandemic is easily the most severe.Here in the United States, we’re still far behind when it comes to recovery. Health security experts at Johns Hopkins University say we have seen some success in treating the virus, but there hasn't been much success in responding to it, especially when it comes to testing.“Many states did not invest in testing and many states did not invest in contact tracers, so when you see cases spiral out of control in certain states, it's not surprising to me,” Dr. Amesh Adalja of Johns Hopkins University said. “That's exactly the recipe you would set up if you wanted cases to rise.”Dr. Adalja says in order to tackle the spread of the virus, the US needs to prioritize testing, tracing and isolating.Health experts across the country have also signed a letter calling on the US to shut down the country and start over. The letter includes a list of recommendations for what's needed before cities can reopen. It calls for enhanced testing capabilities, more contact tracers and more personal protective equipment.Dr. Bill Hanage at Harvard University was one of those who signed the letter, and says safely reopening can happen, “If we look at countries like New Zealand, South Korea, then you can actually see that it is possible with sustained action to shut down, strangle the virus, throw it back to the sea, and then you can open with substantial amounts of normal economy.”Hanage adds that while it can be done, it's yet to be seen if the US is capable of doing this.The Association of American Medical Colleges has also offered a road map that would change the country's approach to the pandemic. It calls for some of the same things other doctors have asked for -- testing, tracing, and more PPE.It also goes further and asks for broad health insurance coverage for people who have lost their jobs, remedying drug shortages, and establishing national standards on face coverings. 2188

Thousands of Central American migrants fleeing poverty and violence packed a bridge connecting Guatemala and Mexico in sweltering heat Saturday as part of a politically charged, U.S.-bound caravan.At one point, several dozen migrants trying to make their way north sang the Honduran national anthem on the edge of the muddy Suchiate River between Tecun Uman, Guatemala, and Tapachula, Mexico.Their journey continued one day after defiant caravan members rushed passed border gates only to be stopped by rows of Mexican riot police who dispersed tear gas and smoke canisters into the crowds.The slow procession north has led President Donald Trump to threaten to cut aid to Central American nations and to send troops to the U.S. border if Mexico failed to stop the surge."Our message is we're not criminals," Honduran migrant Orlean Herrera said. "We're coming over here because we need a better life. That's why we're here." 933

Treacherous driving conditions and canceled flights could keep residents stuck at home for days as a nasty mix of snow and ice grip the Southeast."Over 20 million people are under winter weather alerts, over 8 million people are under a flash flood threat, and over 9 million people are under wind advisories," CNN meteorologist Haley Brink said Sunday.More than 12 inches of snow will fall Sunday in the southern and central Appalachians, the National Weather Service said.Snowfall could total 12 to 20 inches over the Appalachians and into the Carolinas by Monday, when the storm is expected to move off the coast, the NWS said."Snowfall amounts in some locations will likely exceed a foot and result in several days of difficult or impossible travel, extended power outages, and downed trees," the agency said.The storm already has knocked out power for more than 546,000 customers in the Southeast.The bulk of the outages are in North Carolina, where 244,807 customers are in the dark. In South Carolina, more than 225,600 customers have lost power. And Alabama, Tennessee and Georgia each had about 20,000 and 30,000 customers are out of electricity.Those hoping to escape the storm may be out of luck. More than 1,100 Sunday flights into and out of North Carolina's Charlotte Douglas International Airport have been canceled, according to flight tracking website FlightAware.More than half the Sunday flights at Raleigh-Durham International Airport and Piedmont Triad International Airport have also been called off. 1530

Today, millions of Americans who didn't have high blood pressure before have it now. This is the first time the definition for hypertension has changed in 14 years. Now 103 million people will have high blood pressure.Based on new guidelines from the American Heart Association and other health groups, 130 over 80 is the number that means you have high blood pressure. That reading has historically been considered normal. But now, it's stage 1 hypertension, and it means 46 percent of U.S. adults, many of them under the age of 45, have the disease."So do people need to run out and get medication right now? The short answer is no," Dr. Sam Aznaurov, cardiologist at Presbyterian/St. Luke's Medical Center, said.Dr. Aznaurov said the only way people in this range would have to start medication is if they have another underlying cardiac disease. Your risk doesn't change either. Instead, it's a wake up call. ""I'm looking at this as more of the start of a formal conversation," Dr. Aznaurov says. "Saying, 'Hey maybe you should get a blood pressure cuff at home and start monitoring that blood pressure and bring in those numbers for us to review together at your next visit.'"The lower score is expected to triple the number of younger men considered hypertensive and double the number of younger women with high blood pressure. So if not medication, what can you do? Doctors say make lifestyle changes. For starters, cutting back on salt, carbs, tobacco and alcohol.Dr. Aznaurov says, "It's weight loss, exercise. It's getting plenty of sleep. It's treating underlying related conditions." If successful, the study's authors say these things can significantly lower your numbers, and risk of heart attack and stroke."The bottom line is that yeah we really do really see visible results with those changes," Dr. Aznaurov says.Under the new guidelines normal blood pressure will be considered anything less than 120 over 80. 1962