Bjorn, aged 5, smiles as he poses with a Owl butterfly during an event to launch the Sensational Butterflies exhibition at the Natural History Museum in London, Britain March 23, 2016. REUTERS/Dylan Martinez TPX IMAGES OF THE DAY
A boy walks behind a banner in a makeshift refugee camp at the northern Greek border point of Idomeni, Greece, Friday, April 1, 2016. More than 50,000 refugees and migrants have been stranded in Greece after Balkan countries closed their borders to the massive flow of refugees pouring into Europe. (AP Photo/Darko Vojinovic)
In this Monday, March 28, 2016 photo, trainer Catrina Bloomquist works with Nav, an 11-year-old rescued California sea lion, as part of a new exhibit opening at the Georgia Aquarium. The aquarium is in the midst of celebrating its tenth anniversary, and as part of the festivities, patrons will be introduced to the newest faces in Atlanta, a group of rescued California sea lions. (AP Photo/David Goldman)
Demonstrators burn flares during a protest in Paris, Thursday, March 31, 2016. Some French train drivers, teachers and others are on strike to reject a government reform relaxing the 35-hour workweek and other labor rules. (AP Photo/Christophe Ena)
People recite the pledge of allegiance before listening to Republican presidential candidate Donald Trump speak at a campaign event at St. Norbert College in De Pere, Wis., Wednesday, March 30, 2016. (AP Photo/Patrick Semansky)
A balloon thrown by a North Korean defector containing a colored liquid bursts on a portrait of North Korean leader Kim Jong Un during a rally protesting North Korea Wednesday, March 30, 2016, in Seoul, South Korea. North Korea fired a short-range projectile from an area near its eastern coast on Tuesday, South Korean officials said, in what appears to be another weapons test seen as a response to ongoing military drills between Washington and Seoul. (AP Photo/Ahn Young-joon)
In this Sunday, March 27, 2016, photo, Pavlof Volcano, one of Alaskaâs most active volcanoes, erupts, sending a plume of volcanic ash into the air. The Alaska Volcano Observatory says activity continued Monday. Pavlof Volcano is 625 miles southwest of Anchorage on the Alaska Peninsula, the finger of land that sticks out from mainland Alaska toward the Aleutian Islands. (Colt Snapp via AP) MANDATORY CREDIT
TOPSHOT - US President Barack Obama and First Lady Michelle Obama read Maurice Sendak's 'Where the Wild Things Are' to children at the annual Easter Egg Roll at the White House in Washington, DC, on March 28, 2016.
Some 35,000 guests have been invited to participate in the 138th annual Easter Egg roll. The theme of the day's event is Let's Celebrate! / AFP / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
VANCOUVER, BC - MARCH 27: Matt Bartkowski #44 of the Vancouver Canucks gets his helmet adjusted during their NHL game against the Chicago Blackhawks at Rogers Arena March 27, 2016 in Vancouver, British Columbia, Canada. (Photo by Jeff Vinnick/NHLI via Getty Images)
PALMYRA, SYRIA. MARCH 26, 2016. An injured soldier of the Syrian government army at the Fahkr ad-Din al-Maani castle in Palmyra, a UNESCO World Heritage Site. The Syrian Government's army is fighting with ISIS militants for control of the heritage site. Valery Sharifulin/TASS (Photo by Valery Sharifulin\TASS via Getty Images)
Pakistani women mourn the death of relatives after a bomb blast in Lahore on March 27, 2016.
At least 25 people were killed and dozens injured when an explosion ripped through the parking lot of a crowded park where many minority Christians had gone to celebrate Easter Sunday in the Pakistani city Lahore, officials said. / AFP / ARIF ALI (Photo credit should read ARIF ALI/AFP/Getty Images)
BRUSSELS, BELGIUM - MARCH 27: Right-wing self-described hooligans trample over flowers and candles left over the previous few days at Place de la Bourse for victims of simultaneous suicide bombings at Brussels Zaventem airport and Maelbeek/Maalbeek train station, on March 27, 2016, in Brussels, Belgium. Days after the attacks killed 34 people and injured over 300, security levels have been lowered, but on the Easter Sunday following the attacks, the city still remains on edge. A 'March for Peace' scheduled for the holiday was canceled due to safety concerns. Meanwhile police used water cannons on a group of the few hundred right-wing demonstrators who descended upon the peaceful ongoing vigil on the Place de la Bourse. (Photo by Adam Berry/Getty Images)
DUBLIN, IRELAND - MARCH 27: General view of the flyover at the Easter Sunday Commemoration Ceremony and Parade from OConnell Street on March 27, 2016 in Dublin, Ireland. Today marks the 100th anniversary of the Easter Rising in the Republic of Ireland when in 1916 a rebellion was attempted to oust British rule of the country. (Photo by Maxwells/Irish Government - Pool/Getty Images)
Women try to comfort a mother who lost her son in bomb attack in Lahore, Pakistan, Monday, March 28, 2016. The death toll from a massive suicide bombing targeting Christians gathered on Easter in the eastern Pakistani city of Lahore rose on Monday as the country started observing a three-day mourning period following the attack. (AP Photo/K.M. Chaudary)
FILE - In this March 25, 2016 file photo, representatives throw papers up in the air at the conclusion of the final day of the Georgia General Assembly at the capitol in Atlanta. State lawmakers finished their annual legislative session on Thursday. The Associated Press takes a look at the what happened and what issues remain on the table for the state moving forward. (AP Photo/Jason Getz)
Firefighters and rescue workers search for victims at the site of an under-construction flyover after it collapsed in Kolkata, India, March 31, 2016. REUTERS/Rupak De Chowdhuri
NEW YORK - MARCH 30: GOP Presidential Candidate John Kasich eats a piece of pizza at Gino's Pizzeria and Restaurant on March 30, 2016 in the Queens borough of New York City. Kasich is one of three remaining GOP Presidential Candidates fighting for New York's 95 Republican delegates in the upcoming primary on April 19, 2016. (Photo by Bryan Thomas/Getty Images)
An attendee stands for a photograph while wearing a shirt in support of Senator Bernie Sanders, an independent from Vermont and 2016 Democratic presidential candidate, not pictured, in Kenosha, Wisconsin, U.S., on Wednesday, March 30, 2016. After routing Hillary Clinton in three western-state Democratic caucuses, Sanders still faces daunting delegate math and a road ahead dominated by big-state primaries that have been the weakest link in his campaign. Photographer: Luke Sharrett/Bloomberg via Getty Images
SANTIAGO, CHILE. MARCH 30, 2016. Chefs chat as an Airbus A350 XWB long range jet airliner performs a demonstration flight at the FIDAE 2016 aerospace exhibition, at Comodoro Arturo Merino Benitez International Airport. Marina Lystseva/TASS (Photo by Marina Lystseva\TASS via Getty Images)
GOMEL REGION, BELARUS. MARCH 28, 2016. Hunters using decoys take aim with their guns while drake hunting in spring on the Pripyat River in the Losiny Ostrov game ranch. Viktor Drachev/TASS (Photo by Viktor Drachev\TASS via Getty Images)
HAVANA, CUBA - MARCH 25: Rolling Stones fans wait for the start of a free concert March 26, 2016 in Havana, Cuba. Thousands of fans waited for the Rolling Stones to play for the first time in Cuba, after the music was once banned by the government. (Photo by Joe Raedle/Getty Images)
A Cuban migrant couple rests inside a tent at a provisional shelter in Paso Canoas, at the border with Costa Rica March 20, 2016. More than 1,500 Cuban immigrants are currently waiting at Costa Rica's southern border with Panama as they seek overland passage towards the United States, according to local officials. REUTERS/Carlos Jasso TPX IMAGES OF THE DAY
A businessman looks at cherry blossoms in almost full bloom in Tokyo, Japan, April 1, 2016. REUTERS/Issei Kato TPX IMAGES OF THE DAY
Migrants gather and have a party in the northern Greek border station of Idomeni, Greece, Sunday, March 27, 2016. More than 11,500 migrants and refugees are still at the makeshift camp, even though Macedonia has shut its border to them, as have other Balkan countries along what used to be the refugees main route to central Europe. The Greek government wants to empty the Idomeni encampment by next month, but has ruled out using coercive measures. (AP Photo/Darko Vojinovic)
Palestinians are silhouetted by the sunset, as they stand at the Gaza port at sunset in Gaza City, Thursday, March 31, 2016. (AP Photo/Hatem Moussa)
Discover More Like This
BACK TO SLIDE
As we head into a new month, take a few minutes to look back at the past week's biggest stories -- including the deadly collapse of an overpass under construction in India, the ongoing campaigning for the United States' 2016 presidential election, and the beginning of spring across the Northern hemisphere.
Click through the slideshow above to see photos from all of these headlines and more, and be sure to check back next weekend for our selection of the best photography from the coming seven days.