#lead-author

#lead-author

With hot summer months ahead, taking a dip in the water can be a refreshing way to cool off.Whether you're diving into your family's backyard pool or floating in the ocean, staying safe around water is crucial, said Dr. Sarah Denny, lead author for the Prevention of Drowning American Academy of Pediatrics policy statement.

The La Danta pyramid in northern Guatemala.Deep in the jungle, researchers have found evidence of a well-organized system of hundreds of ancient Mayan cities.The discovery suggests the ancient civilization was far more advanced than previously thought.( Andres Turcios and Mirciny Moliviatis/FARES)Beneath 1,350 square miles of dense jungle in northern Guatemala, scientists have discovered 417 cities that date back to circa 1,000 B.C. and that are connected by nearly 110 miles of "superhighways" - a network of what researchers called "the first freeway system in the world."

A daily pill may halve the risk of death for lung cancer patients with a particular type of genetic mutation who have undergone surgery, according to much awaited clinical trial results.The drug is called osimertinib, which AstraZeneca Pharmaceuticals produces under the brand name Tagrisso.It has been used to treat later-stage lung cancer since the U.S. Food and Drug Administration granted it an accelerated approval in 2015.

Good morning.It's Tuesday.We'll hear from a scientist who figured out that New York City is sinking, in part because all the buildings weigh 1.68 trillion pounds.We'll also look at why the Metropolitan Transportation Authority is proposing raising the base fare to $2.90.Image Credit...Karsten Moran for The New York Times Maybe you have had that sinking feeling lately.

Melting ice around Antarctica will cause a rapid slowdown of a major global deep ocean current by 2050 that could alter the world's climate for centuries and accelerate sea level rise, according to scientists behind new research.The research suggests if greenhouse gas emissions continue at today's levels, the current in the deepest parts of the ocean could slow down by 40% in only three decades.

Astronomers are just beginning to unpack the treasure trove of information that the James Webb Space Telescope (JWST) has siphoned from a nearby world that orbits two stars.So far, they've already learned that the clouds of this world rain sand.These particles are very hot; a description of the new research from JWST's managerial base at the Space Telescope Science Institute (STScI) in Maryland says that the high atmosphere of exoplanet VHS 1256 b is a place where "temperatures reach a scorching 1,500 degrees Fahrenheit (830 degrees Celsius)."

It looks likely that the water on Earth is older than the Sun and the stuff we drink today probably isn't all that different than it was over 4.6 billion years ago when our star formed.Researchers at the US National Radio Astronomy Observatory (NRAO), working with the instruments at Chile's Atacama Large Millimeter/submillimeter Array (ALMA), reached that conclusion based on observations of protostar V883 Orionis, a part of the Orion constellation located around 1,305 light years from Earth.

Adults who had a lower respiratory tract infection such as bronchitis or pneumonia before the age of 2 may be at higher risk of dying prematurely from respiratory disease, according to a new study.Experts say the decades-long research may not directly apply to today's kids but shows how health effects can linger over a lifetime.