Male birds typically sing the same tunes as the rest of their species because an unrecognizable song defeats the two primary reasons for their crooning — to establish and defend their territory and to attract mates. While the songs, which are passed down from generation to generation, may vary slightly by region, any new compositions are typically limited to the local environment. However, for reasons unknown to scientists, white-throated sparrows across Canada are abandoning their classic song for a catchy new tune "written" by their peers in British Columbia....

Scattered across the ocean bed, and often hidden from the human eye, are hundreds, or perhaps even thousands, of "blue holes." The massive underwater sinkholes, which host a diverse biological community — ranging from coral to sponges to sharks to sea turtles — were formed thousands of years ago when groundwater dissolved karst, a type of porous limestone rock found on ocean floors....

American civil rights leader and U.S. Representative John Lewis (D-GA) passed away on July 17, 2020, following a seven-month battle with pancreatic cancer. The 80-year-old dedicated his life to building what he called "The Beloved Community" in America — first as a civil rights leader and then as a lawmaker advocating, for reforms on issues from gun control to health care....

Over the years, there have been numerous attempts to create "glow-in-the-dark" plants. However, none of the approaches — which included infusing plants with nanoparticles of the luciferins and enzymes needed for the phenomenon to occur, or incorporating them with bacterial bioluminescence genes – proved feasible....

On July 18, 2020, about 150 Paris residents settled inside 38 electric boats floating on the Seine river to enjoy a free screening of Le Grand Bain — a 2018 comedy about a group of middle-aged men forming a synchronized swim team. The city's first "Cinema sur L'Eau," or "Cinema on Water," was organized by MK2 Cinemas to celebrate the June 22 reopening of the country's movie theaters, which had been shuttered since mid-March to stem the rapid spread of the novel coronavirus....

Even those not normally interested in astronomy will find it hard to resist NEOWISE, the brightest comet to grace our skies since the 1997 appearance of Comet Hale-Bopp. The spectacular cosmic snowball of frozen gas, rock, and dust has been visible to those willing to wake up before dawn since early July. However, it has now risen high in the evening skies and can be viewed with the unaided eye by even the most casual stargazer....

The solar system is about to get busy! In the next few weeks, a slew of spacecraft will embark on a one-way journey to Mars, to seek evidence of past life and to further investigate its unusual atmosphere. The back-to-back missions are timed to take advantage of the short window of opportunity — caused by celestial mechanics — that will allow them to reach the Red Planet in the most efficient and cost-effective manner....

The term "bird brain" is frequently used to describe a person's lack of intelligence and good decision-making ability. However, some scientists believe it should be considered a compliment, given that many birds can perform tasks that were once considered solely within the realm of humans. These include manufacturing and using tools, solving problems, and planning for future needs. Now, Griffin, an African Grey parrot, has proved that birds may even possess better visual memories than human adults and children....

One of the biggest challenges to battling the rapid spread of COVID-19 is identifying and isolating people who are infected before the symptoms, which usually take between 3 to 13 days to surface. Now, frontline workers may get some help from canines who can "sniff out" the disease even when the patient is asymptomatic, meaning he or she never shows any of the traits associated with COVID-19....

Former US President Ronald Reagan's love for jelly beans, which were a staple offering during his 8-year-term in office, is well-documented. However, the country's 40th head of state also had another guilty pleasure — ice cream, which he described as "[a] nutritious and wholesome food." To give the delicious treat the respect it deserved, on July 9, 1984, Mr. Reagan signed Proclamation 5219, which declared July as National Ice Cream Month!...

A massive dust cloud that had been journeying 5,000 miles from the Sahara Desert across the Atlantic Ocean since June 15, 2020, finally hit the United States mainland on June 26, 2020. Nicknamed "Godzilla," the 3,500 mile-long plume broke into two chunks, thanks to the split in the mid-levels of the atmosphere....

Burying loved ones with basic necessities like grains, ceramic pots, and clothing, to ensure their comfort in the afterlife, was a fairly common tradition in ancient cultures. However, the families of some lucky individuals went a step further by including a board game for entertainment. Morten Ramstad, a researcher at the University of Bergen, Norway, and his team stumbled upon one of the rare artifacts — found only in a handful of graves before — while excavating the remains of an Early Iron Age (400-300 BC) burial mound in Western Norway....

Spain's three-month-long lockdown order imposed to curb the spread of the COVID-19 pandemic was finally lifted on June 22, 2020. To celebrate the joyous occasion, the Gran Teatre del Liceu in Barcelona, Spain — one of Europe's oldest and most famous opera houses— staged its first live performance since mid-March. While every seat was occupied, there was not a human to be found. Instead, the sold-out audience comprised 2,292 potted plants carefully selected from local nurseries....

With less than 55,000 grizzly bears left in the wild across North America, the sighting of even one is a cause for celebration. Hence you can only imagine how delighted Cara Clarkson and her family were when they spotted two young grizzlies — one with rarely seen all-white fur— foraging alongside the Trans-Canada Highway near Banff, Canada, on April 26, 2020....

June 19, 2020, marks the 155th anniversary of Juneteenth — a mashup of June and nineteenth — the oldest-known celebration commemorating the end of slavery in the United States. It was on this day in 1865 when the last American slaves — a group of people in Texas — finally learned that slavery had been abolished and that they were free....

With the days getting increasingly longer and warmer, the Northern Hemisphere summer may seem to be well on its way. However, though the meteorological season, which evenly splits the 12 months of the year into four seasons, started on June 1, 2020, the astronomical summer will not begin until June 20, 2020. Called summer solstice, it is the day when the North Pole is most inclined towards the Sun, allowing residents of the Northern Hemisphere to enjoy the longest day (and shortest night) of the year. Conversely, Southern Hemisphere residents will celebrate the astronomical start of winter, or winter solstice, with the shortest day (and longest night) of 2020....

Identifying the chemical makeup of pigments used in ancient documents, paintings, and watercolors is critical to restoring and conserving the precious artworks. However, despite numerous efforts, scientists had been unable to determine the source of folium, a popular blue dye used to color manuscripts in Europe during the middle ages — from the 5th to the 15th century. Now, a team of researchers from Portugal has finally uncovered the mysterious ingredient responsible for the gorgeous blueish-purple tint that helped bring ancient illustrations and texts to life....

As if the COVID-19 pandemic has not been difficult enough, 2020 has another "trick" in store for the residents of Southwest Virginia, parts of North Carolina, and West Virginia. This one will come in the form of millions and millions of noisy cicadas who are gradually emerging from their 17-year underground hibernation to spend the final few weeks of their lives mating and breeding. Dubbed Brood IX, the alien-like insects are expected to peak in mid-June, with as many as 1.5 million specimens emerging per acre. The visit, however, will be short-lived, and most will be gone by July....

Are you looking for an "out of this world" gift for dad this Father's Day? Then you are in luck, for June 21, 2020, also happens to be the day of a relatively rare annular solar eclipse. The celestial event, which will transform the Sun into a spectacular "ring of fire," will be visible across a narrow, but long, slice of the Eastern Hemisphere. While a larger swath of the world will be able to view a partial eclipse, Americans will miss the event altogether since it will occur on the evening of June 20 and end by sunrise on June 21, 2020....

Over the past two decades, powerful instruments, like the now-retired Kepler space telescope, have allowed astronomers to identify thousands of exoplanets. While the unique new worlds, which range from fiery gas giants to icy spheres, have helped increase astronomers' knowledge about the development of planets, the process of how they form has always been a mystery. Now, scientists may finally get some answers thanks to the stunning, first-ever images of a new exoplanet being "born" about 520 light years from Earth....

Since May 26, 2020, cities across the US have been gripped by protests seeking justice for George Floyd, an unarmed African American man who died in police custody on May 25, 2020. The incident has led to one of the biggest displays of unrest seen in America in 50 years and reignited the debate about law enforcement and race relations globally. From May 30 to June 1, 2020, thousands of demonstrators in cities across the world — from London to Berlin to Auckland to Brazil — marched in solidarity with their US counterparts to demand justice for Floyd and to protest against the mistreatment of minority groups in their respective countries....

Astronauts aboard the International Space Station (ISS) are always thrilled to welcome new crew members to the orbiting laboratory. However, the May 31, 2020, arrival of NASA astronauts Robert Behnken and Douglas Hurley on SpaceX's Endeavour was particularly exciting. It was the first piloted launch from American soil since the US Space Shuttle program was retired in 2011 and the first human spaceflight performed by a public-private partnership — NASA and SpaceX....

If you are looking for an excuse to indulge in a donut or two, here is a perfect one. Friday, June 5, 2020, is National Donut Day, which means it is your civic duty to devour one — or even a dozen — of the fried treats. Observed annually on the first Friday of June, the yummy holiday was not established by donut manufacturers to boost sales but by Salvation Army volunteers to raise funds for the poor....

Countries worldwide are gradually easing the strict lockdown restrictions imposed to curb the spread of COVID-19. While this will allow non-essential businesses to resume operations, they are required to ensure customers keep a safe six-foot distance from each other at all times. Here are some creative ways in which companies are abiding by the regulation....