(CNN) Honduran authorities have charged five suspects with the murder of environmental activist Berta Cáceres.
Cáceres, one of the Central American nation's best-known activists, was found shot dead in her home in La Esperanza in March.
Eco art: Can it make a difference?
In the "Waving Wall," designers and water crisis campaigners Bloo Nation highlight the considerable water footprint linked to the production of day-to-day goods like coffee, jeans and paper.
Artist and photographer Mandy Barker has created a series of images, dubbed "SOUP," that highlight the mass accumulation of discarded plastic and debris in an area of The North Pacific Ocean known as The Garbage Patch.
"The Ice Typography series consists of three-dimensional words fabricated in ice that speak to our relationship with the environment," says Canadian artits
Nicole Dextras. "These frozen words absorb light, melt and eventually leave no trace ... They are signs with nothing to sell, hoping to gain your attention for only a brief moment of reflection on the natural world around us."
These ethereal "Frozen Trees," installed at a plaza in downtown Lisbon, Portugal, are made from thousands of IKEA plastic bag dispensers. Designers "LIKE Architects" turned the prosaic objects into 30 LED-illuminated street lights.
British artist and designer Steve Wheen creates tranquil miniature outdoor scenes in potholes in London roads. "The
Pothole Gardener is a project that challenges people's perception of the urban environment around them," he explains. "The point was never to highlight the issues around climate change, rather to bring greenery and beauty into an urban setting. However, if the project brings up these issues, that's great too. I know it's a cliche, but small changes can make a big difference."
Bruce Munro's striking light gardens are glowing landscapes of low-energy LED lights and fiber optics that sparkle in the night. "Creatiing these pieces allows me to (hopefully) communicate some of my thoughts and feelings about the importance of cherishing the environment," he says.
Pinsky's artwork imagines a future when the effects of runaway climate change have transformed London. A string of low-energy blue LED lights wrapped around monuments marks a time, 1,000 years in the future, when sea level rises have changed the city beyond recognition.
"This hand-made stool is a way to freeze in time and extract from our garbage what we don't use any more, giving it life again in our home," says Argentinian designer Rodrigo Alonso, who created this piece of furniture from discarded electrical goods.
Belgian graphic designer
Strook used a moss-covered wall in his home city of Leuven as a canvas -- employing a power-washer to create what he calls "reverse graffiti." He created this bird mural by cleaning moss off, rather than spraying paint on. "A filthy wall became something attractive," he says. I hope some people will look at the wall in a different way and discover the beauty of nature."
Spanish art collective
Luzinterruptus recently created a temporary installation of recycled glass containers streaming from dismantled public fountains in the streets of Madrid. They say the luminous works of art is are interventions -- designed not only to look beautiful, but to bring attention to the lack of water facilities in public spaces in Spain's capital.
Ethiopian artist
Kebreab Demeke says the jerry can -- known locally as a "jerekina" -- has become a ubiquitous part of his nation's landscape. In this work he shows the making of a man-made tree from a collection of jerekina, now a source of inspiration for his much of his work.
Recycled computer motherboards and electrical parts have been transformed into an entire continent in
Susan Stockwell's remarkble map of America, while discarded monitors flood from the ceiling as part of this installation for the American Art League in Houston.
Sculptor Stacy Levy has created a dynamic installation in the city of Philadelphia that responds to temperature rises and changes in air quality in the local environment. The glass globes contain different types of vegetable oils that cloud and clear depending on the atmosphere outside.
French sculptor
TieRi compresses waste products into familiar urban forms in a series called "Incompressions." The handmade sculptures "breath life into useless objects," he says "reminding us that everyday things can be more than their original function."
"Fundamentally my installation is a sculptural catalyst for our perception of the environment while intrinsically revealing the sublime energy of wind," says American artist and photographer
Patrick Marold. "The extraordinary role of art in these debates is that it affects the individual, inspiring and reinforcing their own personal relationship with the environment."
The 45-year-old, who campaigned for indigenous and environmental causes, had long been subject to repeated threats and harassment.
She was part of a group leading a campaign against Agua Zarca, one of the nation's biggest hydropower projects.
The five men, including two brothers, were charged with her murder Friday.
In a statement, the Honduran Public Ministry said an investigation had yielded "technical and scientific evidence" that had led to their arrests.
It did not provide specifics on what kind of evidence was found, but said one of the suspects had the gun used in the killing. He had been charged with illegal possession of firearms, authorities said.
Opinion: Activist's killing keeps Honduras in the shadows
Celebs with issues: Saving the planet
Actor Robert Redford
made the environment his cause decades ago, whether it was Alaskan wildlife refuges or climate change. For his commitment, Redford was honored with the Walden Woods Project's 2014 Global Environmental Leadership Award on September 15. Here, Redford speaks at the opening of the Natural Resources Defense Council building in Santa Monica, California, in 2003. It's named the Robert Redford Building. Redford is just one of many celebs who've taken a stand or taken a chance to change the way we power the planet.
Actress Daryl Hannah was handcuffed and arrested while protesting the Keystone XL Pipeline in February 2013. She's also the executive producer of the documentary "Greedy Lying Bastards," which explores climate change denial.
After Hurricane Katrina leveled New Orleans' Lower 9th Ward, actor Brad Pitt announced a plan to build 150 ecologically sustainable homes there. The homes, an initiative of his Make It Right Foundation,
"exceeded my expectations," Pitt said in 2010. "Now every house you see here, last month, every one but one was producing more energy than it was consuming."
Actor and environmentalist Ed Begley Jr. has made a living going green with shows like "Living with Ed." He dropped meat, avoids driving and tries to live off the electrical grid in a self-sufficient home. In February 2013, he spoke at a rally in Los Angeles for action on climate change.
In 2010, the Sydney Theatre Company in Australia switched on solar panels on the rooftop of its historic home, The Wharf theater. Sustainability is part of the vision of the theater's artistic directors, actress Cate Blanchett and her husband, Andrew Upton.
Actor Edward Norton ran a marathon to support conservation in the east African grasslands. He has also campaigned for sustainable energy and served as a United Nations goodwill ambassador for biodiversity. "I think catastrophic events like what's happening in the Gulf with the oil spill do highlight for people that there is enormous ramification for human well-being through a loss of biodiversity,"
Norton said in 2010.
Actor Leonardo DiCaprio gets green cred for his solar house and hybrid car, but he also produced and narrated the documentary, "The 11th Hour." The film details environmental problems and considers solutions.
Actress Cameron Diaz starred in "Cameron Diaz Saves The World!" It was a short online film that sussed out Americans' feelings about the environment. She briefly hosted an MTV eco-show, "Trippin'." And who could forget when she announced she doesn't flush after urinating -- no water wasted! Time magazine even called her one of its
environmental heroes of 2009.
Actor Morgan Freeman has spoken up over the years about finding clean, safe energy sources, and he has lent his voice to several projects, including PBS' "e² energy" series. He also owns a Tesla Model S, a high-end electric sports car, The Hollywood Reporter said.
Sure, he's well-known because he's former Vice President Al Gore. But he also won a Nobel Peace Prize in 2007 for his efforts to combat climate change, and his 2006 film, "An Inconvenient Truth," won an Oscar for best documentary.
The Dave Matthews Band has a long reputation of eco-responsibility, using a biodiesel tour bus, offering organic-cotton merchandise and using carbon offsets for its tour. That reputation
took a hit after the band's bus driver was accused of dumping human waste into the Chicago River, with some sludge raining on a tour boat. (Ew.) The band wasn't on the bus, but after a lawsuit, it agreed to pay a settlement and make big donations to groups supporting the the river and parks.
Actor Orlando Bloom falls into that hybrid-driving, solar-supporting celeb camp. He's a regular at green events, and he supports initiatives like Global Cool, an organization with a mission to raise awareness about climate change.
Link to hydropower project
One of the suspects is linked to the company DESA, which owns and operates the Agua Zarca hydropower project.
The suspect was "manager for social and environmental matters for the company," according to a statement by Agua Zarca.
The company said it was "under no circumstances responsible or has (a) material and intellectual link" with her killing.
The United States ambassador to Honduras, James Nealon, welcomed news of the arrests.
"From the very beginning, we have called for a thorough investigation into Cáceres' murder -- one that followed the evidence and that would lead to those who committed the crime," he said in a statement on the embassy website.
Witness to activist's slaying barred from leaving country
Family demands action
Cáceres' family has been demanding an investigation by an independent international panel into her killing.
Her daugher, Olivia Zúñiga Cáceres, said the arrests were just the beginning of a long road to prosecution.
"Real justice is to punish the intellectual authors behind this," she told CNN en Español.
"Who planned this, who designed this, who financed the murder -- the assassination of Berta Cáceres. Those who ultimately ordered her death should also be punished with all weight of the law."
Cáceres' nephew, Silvio Carrillo, told CNN in an email that the family would continue to push for an independent investigation.
"As we have stated since the assassination, the Honduran government lacks the veracity and political will to conduct a just, thorough and professional investigation," Carrillo said.
Cáceres' family is not alone on their call for an independent investigation. A group of United States congressmen and congresswomen have reached out to Secretary of State John Kerry, urging him to ensure the Inter-American Commission on Human Rights is involved in the investigation.
Cáceres' family is campaigning to get 1 million signatures to pressure government authorities to stop mining and hydroelectric projects in indigenous communities throughout Honduras.