On September 24, 2019, Nancy Pelosi, the Speaker of the US House of Representatives (House), launched a formal impeachment inquiry into President Donald Trump. The investigation was triggered by allegations that Mr. Trump had asked Ukrainian President Volodymyr Zelensky to look into the business ties of 2020 Democratic presidential candidate Joe Biden's son, Hunter. Allegedly, in order to persuade Zelensky to agree, the US president withheld federal military aid from Ukraine. So how will the impeachment process work, and what are its potential long-term implications for the president? Read on . . ....

Shipworms, which munch through wood and help release essential nutrient stored within it, are incredibly beneficial for other marine animals. However, the saltwater bivalve mollusks have been known to sink boats and cause extensive damage to docks, piers, and other wooden structures. Now, researchers have uncovered a shipworm species of a different kind — one that has the potential to change the course of a river by gnawing through its limestone bedrock!...

Princess Louisa Inlet, a fjord located 60 miles from Vancouver, Canada, is a spectacular stretch of remote wilderness. Accessible only by boat or plane, the 3.7-mile-long (6-kilometers) area is popular with outdoor enthusiasts who flock to admire the 120-foot-high Chatterbox Falls or to hike the numerous trails to other scenic features. Its dense forests are home to a wide variety of wildlife, including grizzly bears, mountain goats, and eagles. Now, thanks to an unprecedented crowdfunding campaign, the pristine land will be preserved forever for future generations to enjoy....

When the curators at the National Gallery in London, England, applied imaging technology to Leonardo da Vinci's famous painting, The Virgin of the Rocks, they fully expected to see a sketch underneath. What they had not anticipated, however, was a drawing that was substantially different from the final masterpiece....

Swimming across the English Channel — the 21-mile-long body of water separating southern England from northern France — is no easy feat. In addition to the strong ocean currents, swimmers also have to endure temperatures that can range from a chilly 64 degrees Fahrenheit (18 degrees Celsius) to a near-freezing 42 degrees Fahrenheit (6 degrees Celsius). However, don't tell that to Sarah Thomas. The 37-year-old American recently became the first person ever to swim across the length of the treacherous stretch of water, which links the southern part of the North Sea to the Atlantic Ocean, not once, but four times non-stop!...

Bees are essential for the pollination of flowers, fruits, and vegetables. Sadly, over the past 15 years, the global population of the industrious insects has been declining at alarming rates. Bee Informed Partnership, a collaboration of American insect experts, estimates that between April 1, 2018, and April 1, 2019, the country's managed bee population decreased by 40.7 percent. The numbers are as dire worldwide. Now, some cities in the Netherlands are coming up with innovative ideas to help stem the population decline of these all-important insects....

Sending a distress message in a bottle would not typically be considered a sensible strategy. However, it miraculously worked for three hikers from Morro Bay, California, who found themselves stranded atop a 40-foot waterfall at the Pfeiffer Big Sur State Park on California's Central Coast....

Australia’s Great Barrier Reef, home to over 1,500 fish species and countless other marine animals, is in trouble. Rising ocean temperatures, attributed to climate change, have destroyed about half of its coral since 1998. On August 30, 2019, the Great Barrier Reef Marine Park Authority downgraded the ecosystem's condition from "poor" to "very poor" and warned that the window of opportunity to save it was rapidly closing. Now, some scientists are hoping that a gigantic piece of pumice stone currently floating towards Australia will aid in the recovery of the world's largest coral reef system....

Though famous American singer-songwriter Taylor Swift may consider 13 her lucky number, millions of people worldwide do not share the sentiment. Things get even worse for the superstitious when the date, as is going to happen this week, coincides with a Friday. While no one knows for sure how Friday the 13th got its fearful reputation, experts have some theories....

The Atlantic hurricane season, which spans from June 1 to November 30, had been relatively calm this year, with just one major storm in July. That changed at the end of August, when Dorian, a Category 5 hurricane, came screaming through, leaving a trail of destruction all the way from the US Virgin Islands to the Bahamas and the US and Canadian east coasts....

On Wednesday, September 11, 2019, Americans will commemorate the 18th anniversary of one of the most tragic days in modern US history. On September 11, 2001, 19 members of the Islamic extremist organization Al Qaeda conducted a series of brutal, well-orchestrated attacks on American soil. In addition to cutting short the lives of 2,977 innocent people, the tragedy also set in motion events that would change the course of life both in the US and worldwide....

If you have been paying any attention to the news, you may have heard of the ongoing unrest in Hong Kong. Since June 2019, pro-democracy protestors have brought large areas of the bustling Chinese territory to a standstill with weekly demonstrations and sit-ins. Among the most disruptive was the August 12 protest at the Hong Kong International Airport. Thousands of dissenters barricaded the airport's passageways with luggage trolleys, metal barriers, and other objects, blocking passengers from boarding and forcing the cancellation of outbound flights for two consecutive days. So what has triggered the widespread discontent against the Beijing government? Read on . . ....

It is not uncommon for human-generated blazes — lit to clear the land out for farming or ranching — in the Amazon rainforest to get out of control. However, this year, the number of wildfires has been extraordinarily high. Brazil's National Institute for Space Research (INPE) has recorded over 73,000 fires in the world's largest tropical rainforest between January and August 2019, 2,500 of which are currently active. This is the highest number observed since the agency began keeping records in 2013, and an astounding 80 percent more than during the first eight months of 2018....

In addition to their myriad other responsibilities, the brave Mars pioneers will also have to be ready to deal with all kinds of medical emergencies. Some ailments, such as common colds and headaches, may be easy to tackle with medication. To help them with more serious issues, like severe skin burns or bone fractures, scientists from the Dresden University of Technology (TUD) have developed a 3-D bioprinter capable of producing human tissue in space....

It is common knowledge that the droplets spread from sneezing are one of the key culprits responsible for transmitting infectious diseases between humans. Now it turns out that some plants have a similar ability to share the "love" and spread pathogens to each other. However, while sneezing in humans is an involuntary response to irritants along the lining of the nose, plants "sneeze" due to a quirk in fluid dynamics....

Fiona Kolbinger, a 24-year-old with little experience in competitive cycling, took the world by surprise when she became the first female to win the ultra-endurance Transcontinental Race on August 6, 2019. The cancer researcher from Germany outrode 225 men and 39 women to complete the approximately 2,485 miles (4,000 km) race from Bulgaria to France in 10 days, two hours, and 48 minutes. Even more impressive, Kolbinger crossed the finish line almost 11 hours ahead of the second-place winner, Ben Davies of the United Kingdom....

From July 26 to July 28, 2019, New York's Arthur Ashe Stadium hosted the biggest video game competition of all time — the Fortnite World Cup. The event, witnessed by a live audience of over 23,000 and more than 2 million fans online, was the culmination of a 10-week qualification process that whittled down the approximately 40 million hopefuls to the final 200 competitors. In a true testament to the game's universal appeal, the contestants hailed from 34 countries and ranged in age from 13 to 24....

Japan, the host country of the 2020 Olympic and Paralympic Games, has promised to deliver "the most innovative Games ever organized." On July 24, 2019, a year before the competition begins in Tokyo on July 24, 2020, the Olympic Committee unveiled its first ingenious idea — medals made using precious metals extracted from discarded electronics....

On July 23, 2019, Boris Johnson resoundingly defeated rival Jeremy Hunt, to become the leader of the United Kingdom's (UK) Conservative Party and the country's 77th prime minister. The nation's highest government seat became vacant after Theresa May, who served the role from 2016 to 2019, tendered her resignation on June 7, 2019. The 62-year-old leader stepped down after failing to garner parliamentary support for her proposal to end the UK's four-decade-long economic and political partnership with the European Union (EU) with as little disruption as possible....

July 20, 2019, marks the 50th anniversary of the Apollo 11 moon landing. The groundbreaking journey began on July 16, 1969, when NASA astronauts Neil Armstrong, Buzz Aldrin, and Michael Collins launched into space from Florida's Kennedy Space Center. Four days later, on July 20, half a billion people across the globe — or about one-seventh of the Earth's population at the time — watched Armstrong and Aldrin descend the lunar module ladder to become the first humans ever to set foot on the moon. The grainy footage, along with Armstrong's now-famous quote, "That's one small step for man, one giant leap for mankind," remain forever etched in the minds of those that witnessed the event live....

The US women's national soccer team's quest for the 2019 FIFA World Cup began on June 11, 2019, with a resounding 13-0 win over Thailand. In addition to being the largest margin of victory ever in a women’s World Cup match, the score also set a new record for the most goals in a single World Cup game — for both men and women. The team's incredible journey ended almost a month later on July 7, 2019, with a thrilling 2-0 victory against the Netherlands....

Researchers have long envisioned deploying armies of tiny flying robots to tackle vital tasks. The versatile machines could be used as first responders to trace gas or pollutant seepage during natural disasters, to survey crops in large farms, to help astronauts on space missions, and even to assist bees with plant pollination. However, fitting the heavy electronics required to power and control the wings into the robot's tiny frame has been challenging. Now, there is hope, thanks to RoboBee X-Wing — the world's lightest aerial vehicle that can fly without being tethered to a power source....

Two summers ago, on August 21, 2017, thousands of people from across the world witnessed the "Great American Solar Eclipse," the first total solar eclipse to occur exclusively over the continental United States since January 11, 1880. Now, stargazers are getting excited to watch the Sun disappear again for a brief period on July 2, 2019 — this time, the eclipse's narrow path will extend across the South Pacific all the way to Chile and Argentina....

Most people would find it hard to label a computer infected with six of the worst-known viruses, which combined have cost the world $95 billion, as art. However, Chinese digital artist Guo O Dong strongly believes his malware loaded "Persistence of Chaos"— a Samsung NC10, which runs on Windows XP — is a masterpiece. What's more, the creator claims to have sold the "artwork" to an anonymous buyer for an astounding $1.345 million in an online auction on May 25, 2019....