In this Jan. 29, 2016 photo, a girl rides her bike through a flooded street in the Parque Sao Bento shantytown of Rio de Janeiro, Brazil. Authorities are focusing on the most effective way to combat the Zika disease: killing the mosquito that carries the virus. Brazil is in the midst of a Zika outbreak and authorities say they have also detected a spike in cases of microcephaly in newborn children, but the link between Zika and microcephaly is as yet unproven. (AP Photo/Andre Penner)
Riot policemen try to avoid a petrol bomb thrown by protesters during a 24-hour nationwide general strike in Athens, Thursday, Feb. 4, 2016. Clashes have broken out between Greek police and youths throwing fire bombs and stones, as tens of thousands of people march through central Athens to protest planned pension reforms.(AP Photo/Thanassis Stavrakis)
A young tourist looks at a shark at the Underwater Observatory Marine Park aquarium in the Israeli resort city of Eilat, on the shore of the Red Sea, on February 1, 2016. / AFP / MENAHEM KAHANA (Photo credit should read MENAHEM KAHANA/AFP/Getty Images)
In this Jan. 27, 2016 photo, Hanako the elephant stands in her pen at Inokashira Park Zoo on the outskirts of Tokyo. An online petition drive wants the 69-year-old Hanako, or "flower child," to be moved to a Thai sanctuary, to live in a natural, grassy habitat where elephants romp in herds, not alone in her concrete pen, with a wading pool she hardly uses and a nearby side building to spend the night. Itâs attracted tens of thousands of signatures already, with the aim of submitting them to the suburban Tokyo zoo and the Japanese government. (AP Photo/Eugene Hoshiko)
In this Jan. 30, 2016 photo, Elielson tries to calm down his baby brother Jose Wesley, in Bonito, Pernambuco state, Brazil. Jose Wesley was born with microcephaly and he screams uncontrollably for long stretches, getting red in the face and tightening his already stiff limbs. (AP Photo/Felipe Dana)
Young girls close their hands in anticipation of 'fist-bumping' President Barack Obama, right, who stop by to greet school children and other guest after speaking at the Islamic Society of Baltimore, Wednesday, Feb. 3, 2016, in Baltimore, Md. Obama is making his first visit to a U.S. mosque at a time Muslim-Americans say they're confronting increasing levels of bias in speech and deeds.(AP Photo/Pablo Martinez Monsivais)
Debris and a mangled crane lie in the street in New Yorkâs Tribeca neighborhood in Lower Manhattan following a deadly collapse on Friday, Feb. 5, 2016. (AP Photo/Colleen Long)
Former Turing Pharmaceuticals CEO Martin Shkreli, center, listens as his lawyer Benjamin Brafman, left, speaks to reporters as they leave court in New York, Wednesday, Feb. 3, 2016. Shkreli, who has become the poster child of pharmaceutical-industry greed after hiking the price of an anti-infection drug by more than 5,000 percent, is scheduled to appear at a congressional hearing on Thursday. (AP Photo/Seth Wenig)
Democratic presidential candidate Sen. Bernie Sanders, I-Vt., speaks to the media during a campaign stop at The Colonial Theatre, Tuesday, Feb. 2, 2016, in Keene, N.H. (AP Photo/John Minchillo)
KUNMING, CHINA - JANUARY 31: (CHINA OUT) Artists play violins for passengers on a passenger flight on January 31, 2016 in Kunming, Yunnan Province of China. Artists held a spring concert for the passengers on an airplane from Kunming to Hangzhou on January 31. (Photo by Liu Ranyang/CNSPHOTO/ChinaFotoPress via Getty Images)
Young revelers joke with each other as they lay on the shade during the "Burial of the Mosquito" carnival block parade in Olinda, Pernambuco state, Brazil, Friday, Feb. 5, 2016. The parade that happens every year during carnival informs residents and tourists about the dangers of the Aedes aegypti and teaches them how to combat the mosquito. (AP Photo/Felipe Dana)
People dangle from a zip line at Super Bowl City Tuesday, Feb. 2, 2016 in San Francisco. The Denver Broncos play the Carolina Panthers in the NFL Super Bowl 50 football game Sunday, Feb. 7, 2015, in Santa Clara, Calif. (AP Photo/Charlie Riedel)
Bill Cosby waves to cheering fans as he leaves after a court appearance Tuesday, Feb. 2, 2016, in Norristown, Pa. Cosby was arrested and charged with drugging and sexually assaulting a woman at his home in January 2004. (AP Photo/Mel Evans)
Students on the campus of Northern Arizona University navigate through blustery weather in Flagstaff, Ariz., Monday, Feb. 1, 2016. A winter storm dropped snow on the region, closing schools and making travel difficult. (AP Photo/Josh Biggs)
PARIS, FRANCE - FEBRUARY 3: Council workers clearing up the camp after the evacuation by Gendarmes of a Roma refugees' camp deemed insecure and unsanitary, on former railway tracks along Boulevard Ney in northern Paris, early on February 3, 2016. Hundreds were evacuated and the Paris prefecture said every family would be rehoused.
(Photo by Geoffroy Van der Hasselt/Anadolu Agency/Getty Images)
VENEZUELA, CARACAS - FEBRUARY 02: A health employee fumigates against Aedes Aegypti mosquito at a bulding in Caracas, Venezuela on February 2, 2016. Venezuela has recorded 4,700 suspected cases of people infected by the Zika virus according to spokespersons. (Photo by Carlos Becerra/Anadolu Agency/Getty Images)
An ultra-Orthodox Jewish man looks at the Western Wall, the holiest site where Jews can pray in Jerusalem's Old City, Monday, Feb. 1, 2016. The Israeli governmentâs decision to allow non-Orthodox Jewish prayer at Jerusalem's Western Wall is a major breakthrough for the country's long-marginalized liberal streams and their powerful supporters in the United States. (AP Photo/Sebastian Scheiner)
Workers carry a limb from one of numerous fallen trees on courses at Torrey Pines prior to the start of the suspended final round of the Farmers Insurance Open golf tournament, Monday, Feb. 1, 2016, in San Diego. (AP Photo/Lenny Ignelzi)
Democratic presidential candidate Hillary Clinton speaks at a rally at Abraham Lincoln High School in Des Moines, Iowa, Sunday, Jan. 31, 2016. (AP Photo/Andrew Harnik)
EHUD, ISRAEL - FEBRUARY 04: Relatives and family members seen mourning during the funeral of Hadar Cohen on February 4, 2016 in Ehud, Israel. Hadar Cohen was killed yesterday by 3 Palestinians as they carried out an attack at Damascus gate in Old City of Jerusalem. (Photo by Ilia Yefimovich/Getty Images)
AL ZUBARAH FORT, QATAR - FEBRUARY 04: The peloton ride through the Qatar desert during stage 3 of the 2016 Ladies Tour of Qatar from Al Zubarah Fort to Madinat Al Shamal on February 4, 2016 in Al Zubarah Fort, Qatar. (Photo by Bryn Lennon/Getty Images)
SALTBURN-BY-THE-SEA, ENGLAND - FEBRUARY 02: A man stands on top of a hill as ice particle iridescence is seen in high-level Nacreous clouds on February 02, 2016 in Saltburn-by-the-Sea, England.
The rare effect is caused by the diffraction of sunlight in the ice crystals that form the Nacreous clouds at high altitudes. (Photo by Ian Forsyth/Getty Images)
A clearance diver of the French Navy works to neutralise a shell from the second World War found under water off Marseille, southern France on February 2, 2016.
About fifty shells dating back to World War II have been discovered by divers of the marine battalion brigade of Marseille a few hundred meters from the shore. / AFP / BORIS HORVAT (Photo credit should read BORIS HORVAT/AFP/Getty Images)
EXETER, NH - FEBRUARY 04: People listen as Republican presidential candidate Donald Trump speaks during a campaign rally at the Exeter Town Hall on February 4, 2016 in Exeter, New Hampshire. Democratic and Republican Presidential candidates are stumping for votes throughout New Hampshire leading up to the Presidential Primary on February 9th. (Photo by Joe Raedle/Getty Images)
Protected by a mosquito net, Nadia Gonzalez recovers from a bout of dengue fever at a hospital in Luque, Paraguay Friday, Feb. 5, 2016. Dengue, like the Zika virus, is transmitted by the same vector, the Aedes aegypti mosquito. Zika was discovered in a Ugandan forest in 1947 and until last year, the virus had never caused serious disease. It has now spread to more than 20 countries. (AP Photo/Jorge Saenz)
This aerial view shows a solar plant of Ouarzazate, central Morocco, Thursday, Feb. 4, 2016. Morocco's King Mohammed VI unveiled one of the world's biggest solar plants Thursday, taking advantage of the Sahara sunshine and a growing global push for renewable energy. (AP Photo/Abdeljalil Bounhar)
Barbara Bush, right, jokes with her son, Republican presidential candidate, former Florida Gov. Jeb Bush, while introducing him at a town hall meeting at West Running Brook Middle School in Derry, N.H., Thursday Feb. 4, 2016. (AP Photo/Jacquelyn Martin)
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This week's news headlines were dominated by the ongoing worldwide Zika virus epidemic, as well as the amping up of the 2016 United States presidential candidates' campaigning in Iowa and New Hampshire. We also saw severe weather in California and Arizona, rare Nacreous clouds in England, and former Turing Pharmaceuticals CEO Martin Shkreli appearing in court.
Click through the slideshow above to see scenes from all of these stories and more, and be sure to check back next weekend for our selection of the best photography from the next seven days.