Denver, CO
Denver to deploy hundreds of people in yellow vests as it aims to create a ‘clean and safe’ downtown
DENVER – Mayor Mike Johnston and his administration hope a new program announced Monday will be another step in revitalizing the city’s economic and cultural center, which continues to recover from dwindling foot traffic caused by the novel coronavirus pandemic.
Calling downtown Denver the “living room of the city” where Denverites come to see a ball game, eat or enjoy hours of shopping, Johnston said he wanted every resident and guest coming to Denver for the first time to “feel safe right here in our living room and also to feel inspired by the creativity and the innovation and the ingenuity of what Denver has to offer.”
To do so, the mayor outlined a multi-step program involving not just the city or the police department, but businesses, nonprofits, residents and tourists to create a plan “built on the belief that a safe and clean and beautiful downtown is all of our responsibility,” the mayor said alongside the CEO of the Downtown Denver Partnership and the head of the Denver Dream Center, a nonprofit that helps formerly incarcerated people rebuild their lives after their release.
Part of the revitalization is already underway with the closing of several encampments downtown, Johnston said.
“Our plan now is to keep it that way, is to make sure that we can keep downtown free of camping and keep people connected to services and supports they need to get back up on their feet,” the mayor said.
Calling on Denverites to engage in a shared ownership to keep downtown Denver beautiful and safe, Johnston also encouraged Denverites and tourists alike to report any suspicious activity they might encounter with the help of the new Clean and Safe Denver app unveiled by Kourtny Garrett, the CEO of the Downtown Denver Partnership. The app, unveiled during Monday’s news conference, is available for both Apple and Android devices.
“That way if there is unsightly trash, you can let us know. If there’s someone in mental health distress who needs support, you can let us know. If there’s someone that is using or abusing drugs, you can let us know. If there is someone that needs access to support and services, you can let us know,” the mayor said. “We want Denver to be a place where everyone feels comfortable, and we can be sending the right responder to the right place at the right time” with the help of the app, he said.
Garrett told reporters Monday the app will empower people to “be a part of making our downtown just that more beautiful, more clean and more safe (sic)” by allowing users to take a photo of any non-emergent activity people feel needs responding by the city, which will then be sent to the appropriate team of responders to deal with the issue.
She told Denver7 the app and the yellow vest Ambassadors are an expansion of the safety partnership started in November 2022 under the Mayor Michael B. Hancock administration. She said the Ambassadors program is based on the Downtown Action Team, which brought together local enforcement and outreach agencies. But this new iteration is “on steroids,” she said, because the partnerships are broader and more visible.
Mayor Mike Johnston announces creation of Denver Ambassadors Program
While not the Colorado Guardian Angels of the 90s, Johnston also announced the creation of the Denver Ambassadors Program – “a plan to unify the responders that come out to help people in the city and the speed at which we can respond” which will consist of nonprofits, city employees, people in private security and yes, even the Denver Police Department, according to the mayor. “The idea is that we can have the right person with the right response there quickly to be able to support people as soon as you need it.”
Wearing yellow vests (like the one the mayor is seen donning in the photo of this article), the job of the Ambassadors would mostly focus on helping people with non-emergent needs such as helping a tourist find how to get to Coors Field, or request the help of Denver’s STAR program if someone is in distress downtown.
“This is if you are going for a run at 9 o’clock at night, you can see a yellow vest and you know that is someone that is there to provide support,” Johnston said. “You know these are folks that can either directly support you or connect you to the right person.”
While the mayor couldn’t say how many Ambassadors would be patrolling downtown, the numbers would be in the hundreds due to all the personnel with whom the city is partnering to make the program possible. The program, Johnston added, would at first focus on neighborhoods downtown before looking at expanding to other areas.
People in an emergency would still need to call 911 for help or 311 if they’re need in of city services, the mayor stressed.
Johnston also briefly touched on the city’s Dynamic Downtown Denver plan, aimed at distributing hundreds of thousands of dollars in grants.
Individuals, nonprofits, community groups and businesses are eligible to apply for the grants, which will range from $500 to $25,000, Garrett said previously. To learn more about these grants and how to apply, click here.
“If you see someone on the street with a yellow vest, you can stop and ask them (to help). They can jump in and help right away, and (then the next step is) to do ongoing activation of all these spaces because we know the opposite of crime is not safety. The opposite of crime is joy,” Johnston said in closing remarks. “And so what we want to do is really, deliberately, sow joy on all the streets with both the community activation we’ll have downtown, all the business activations where people are down here with the people they love, doing the things they love, in a place that they love.”
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Denver, CO
The hippo had to go, but the Denver Zoo slashed its water budget
Rocky Mountain sandhill cranes battle warmer conditions due to drought
Wildlife biologist Jenny Nehring and farmer Rob Jones talk about Sandhill cranes and their impact on the San Luis Valley.
DENVER — Zoos are of necessity big gulpers of water, a fact that has some zookeepers in the drying American West working to rapidly upgrade efficiency and reduce unnecessary irrigation or leaks.
Denver Zoo, formally known as the Denver Zoo Conservation Alliance, has rapidly reduced its demands on threatened and declining water sources, including the Colorado River.
Among the upgrades is a sea lion water filtration system that allows most of the water to be cleaned and reused each time the pool is drained. That’s saving more than 8 million gallons a year, zoo sustainability director Blair Neelands said. “You can get in there, scrub it with a toothbrush and refill it with the same water,” she said.
Similar upgrades to an African penguin showcase reduced its water use by 95% by largely eliminating what’s sent down the drain. (Like a backyard swimming pool, though, these tanks sometimes still need to be drained and refreshed with new water to reduce mineral buildup.)
“The biggest thing for us is swapping from dump-and-fill pools to life-support systems,” Neeland said.
Another biggie is replacement of a 50-year-old water main with funding of about $3 million from the city. There’s no way of knowing how much that pipe had leaked over the years, but Neeland suspected it was more than a million gallons a year. The savings should become apparent as the zoo tracks its water use over the next few years.
Creating hippo-sized water savings
When The Arizona Republic visited in 2025, the zoo was on the cusp of eclipsing a goal to reduce its water use by half of what it had been in 2018. The zoo had used 80 million gallons in 2024, or about 219,000 a day, a 45% reduction in just a handful of years. Much of the savings had come in the form of smarter irrigation practices and use of drought-tolerant native plants where possible. The landscaping also pivoted to recycled “purple pipe” water from the city, which owns the zoo’s land, restricting potable water to areas where animals really need it.
“When people hear ‘recycled water,’ they get worried about cleanliness and hygiene,” zoo spokesman Jake Kubié said. “But it’s safe for the animals, and it’s not their drinking water.”
Getting past the water conservation goal would mean draining the pool where Mahali the hippo spent most hours lurking with just his eyes, ears and snout visible to visitors. Because he spent so much time in the pool, the water needed daily changes. It amounted to 21 million gallons a year, not to mention water heater bills that drove the cost to $200,000 a year, according to zoo officials. They estimated that Mahali used as much water as 350,000 four-person households.
“This facility is outdated,” Kubié said. “Some day this will become a huge saver of water.”
That day came before year’s end, and it indeed brought a tremendous savings. The zoo shipped Mahali to a new home (and a potential mate) at a wildlife preserve in Texas and drained the pool one last time. Ending the daily change-outs shaved more than a quarter of the zoo’s entire water usage from the previous year. It put the zoo significantly beyond its goal.
Denver Zoo’s water savings are part of a broader waste- and pollution-prevention effort aimed at being a good neighbor in uncertain times, Neeland said.
“Water savings and drought is top of mind for anyone who lives in the Western United States,” she said.
In Phoenix, a different mix of animals
That’s true of the Phoenix Zoo, as well, where zookeepers must maintain landscaping and animal exhibits in a city that baked under 100-degree-plus high temperatures for a third of the days last year. The zoo creates a “respite in the desert,” spokeswoman Linda Hardwick said, but has no hippos, penguins, grizzly bears or many of the other species that would require big water investments for outdoor swimming or cooling.
“We really specialize in animals that will thrive in the temperatures here,” Hardwick said.
The Phoenix Zoo uses most of its water on landscaping. After a consultant’s 2023 irrigation assessment, the staff centralized irrigation scheduling under a single trained technician and employed technologies including weather-based controllers and smart meters. Salt River Project awarded $70,000 in grant funds for the upgrades and several thousand more for training.
The zoo uses about 189,000 gallons a day, she said. That represents a 17% reduction from 2023, or 20% when adjusted for the year’s particular weather and evapotranspiration demand.
Brandon Loomis covers environmental and climate issues for The Arizona Republic and azcentral.com. Reach him at brandon.loomis@arizonarepublic.com.
Environmental coverage on azcentral.com and in The Arizona Republic is supported by a grant from the Nina Mason Pulliam Charitable Trust.
Follow The Republic environmental reporting team at environment.azcentral.com and @azcenvironment on Facebook and Instagram.
Denver, CO
New video shows trespasser on Denver airport runway before deadly collision
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Denver, CO
Person dies after being hit by plane at Denver airport
A Frontier Airlines plane has hit and killed a person at Denver’s international airport, prompting the evacuation of passengers. Authorities say the man jumped a perimeter fence and ran in front of the plane as it was taking off to Los Angeles.
Published On 10 May 2026
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