
Fireflies are lighting up summer skies. But the glowing bugs are still on the decline
There's no official count, but experts say a particularly wet spring may have created the ideal conditions for young fireflies to grow into adults to set summer nights aglow.
Fireflies light the night everywhere: There are over 2,000 known species across the globe. They use their characteristic flashes to communicate and find the perfect mate.
In New York City, the lightning bugs are out in the five boroughs, sparkling once the sun goes down in places like Central Park and Prospect Park. The summer months are ideal to spot them as they start to dwindle throughout the month of August.
While northeastern nights may seem brighter this summer, the bugs are still on the decline and they're waning at a faster rate than ever before.
'It would be a mistake to say firefly populations are high this year, therefore there's no decline,' said Matt Schlesinger with the New York Natural Heritage Program, who is part of an effort to count fireflies in state parks.
Habitat loss, pesticide use and light pollution are responsible for a decline in population. In cities, blaring lights from billboards, cars and storefronts can drown out the bugs' glow, making it harder for them to find their kin and pass their genes onto the next generation.
Fireflies are part of the story of summer, said entomologist Jessica Ware with the American Museum of Natural History. Her children grew up seeing them flash in her backyard, but the bugs started to disappear once her kids hit their teenage years.
In the past few months, her family has seen the fireflies come back. Their return made her think about all the kids who are glimpsing the glowing bugs for the very first time.
'It shouldn't be new,' Ware said. 'It should be something that is a universal part of summer.'
To look out for fireflies, consider turning the lights off at night and avoid spraying front lawns with insecticides.
'We still need to do some work ourselves, to change our behavior, to really make sure that large populations can continue to stay large,' Ware said.
___
The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute's Department of Science Education and the Robert Wood Johnson Foundation. The AP is solely responsible for all content.
Hashtags

Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles


BreakingNews.ie
3 hours ago
- BreakingNews.ie
SpaceX delivers new crew to orbiting station in just 15 hours
SpaceX delivered a fresh crew to the International Space Station on Saturday, making the trip in a quick 15 hours. The four US, Russian and Japanese astronauts pulled up in their SpaceX capsule after launching from Nasa's Kennedy Space Centre. Advertisement They will spend at least six months at the orbiting lab, swapping places with colleagues who have been up there since March. SpaceX will bring those four back as early as Wednesday. Moving in are Nasa's Zena Cardman and Mike Fincke, Japan's Kimiya Yui and Russia's Oleg Platonov – each of whom had been originally assigned to other missions. The docked SpaceX capsule next to the International Space Station (Nasa and SpaceX via AP) 'Hello, space station,' Mr Fincke radioed as soon as the capsule docked high above the South Pacific. Ms Cardman and another astronaut were pulled from a SpaceX flight last year to make room for Nasa's two stuck astronauts, Boeing Starliner test pilots Butch Wilmore and Suni Williams, whose space station stay went from one week to more than nine months. Advertisement Mr Fincke and Mr Yui had been training for the next Starliner mission. But with Starliner grounded by thruster and other problems until 2026, the two switched to SpaceX. Mr Platonov was bumped from the Soyuz launch line-up a couple of years ago because of an undisclosed illness. Their arrival temporarily puts the space station population at 11. The astronauts greeting them had cold drinks and hot food waiting for them. While their taxi flight was speedy by US standards, the Russians hold the record for the fastest trip to the space station – a lightning-fast three hours. Advertisement


The Guardian
4 hours ago
- The Guardian
Coming to a beach near you: a guide to the jellyfish you'll find off the UK coast
Moon jellyfish are the most common species in UK seas, easily identified by its markings of four purple circles within its translucent white bell. The bell has a layer of mucus over it, which the moon jellyfish uses to catch plankton, which it inserts into its mouth using special tentacles. Nasa launched more than 2,478 young moon jellyfish in a container into space in 1991 to study the effects of microgravity on the gravity-sensitive organs of the species. Although they did not reach the moon, scientists discovered that the space-born jellyfish had difficulty swimming in Earth's gravity, as their nervous system had adapted too well to microgravity. The largest species of jellyfish in the world is the lion's mane, which gets its name from its up to 3-metre-long, hair-like tentacles that look like, yes, a lion's mane. These reddish-brown tentacles are packed with stinging cells and are used to prey upon fish and smaller jellyfish. The largest recorded lion's mane specimen was found off the coast of Massachusetts, US, in 1865. It had a bell diameter of 210cm and tentacles measuring about 36.6 metres long. Although not fatal, the sting of a lion's mane jellyfish can cause serious discomfort to a person, from localised redness and pain to vomiting and chest pain. A 34-year-old woman was taken to hospital in 2016 after suffering an allergic reaction from the sting of six lion's mane jellyfish. Another large species to look out for is the barrel jellyfish, with a bell diameter of as much as 90cm and which weigh as much as 35kg. They have eight frilly tentacles and, due to their enormous size, are often found washed up on beaches after searching for prey in shallow waters. Fish and small crabs are known to seek shelter within the tentacles of the barrel specimen, as a safe space from predators. The sting of a barrel jellyfish is typically mild and does not cause real harm to people. Countries across the world and particularly in south-east Asia have eaten barrel jellyfish for more than 1,700 years. The mauve stinger is a small and beautiful jellyfish, typically coloured pink, purple or a bluey purple, and packs a punch with its 3-metre long tentacles full of stinging cells. The mauve stinger has one of the worst stings of all the species and can glow brightly at night when disturbed, giving it the scientific name Pelagia noctiluca, which translates to 'night-light of the sea'. A common summer visitor to the UK is the compass jellyfish, named for its brown lined markings running down the centre of its yellowish-white bell that resemble a compass. When the compass jellyfish stings something, it often detaches a tentacle and leaves it behind, which can still sting despite not being connected to a body. The species, frequently encountered in Cornish coastal waters, can inflict a lot of pain from its sting, which should be rinsed with warm water for 30 minutes to reduce the pain. The nearly transparent and bioluminescent crystal jellyfish can emit light and exhibit a bright green light when exposed to light ranging from blue to ultraviolet. With up to 150 tentacles, this unique jelly is often used in scientific experiments for its bioluminescent properties and proteins, which have revolutionised fields such as cell biology, neuroscience and disease research. Their sting is considered not strong enough to penetrate through human skin and cause harm, but is strong enough to harm and paralyse their prey in the water. The blue jellyfish, similar in shape to the lion's mane species, can be colourless when young and develop its blue-purple bell once mature. This species can have up to 800 fine tentacles that resemble a head of hair; the jellyfish uses these tentacles to direct food – including other jellyfish – towards its mouth. The venom from a blue jellyfish sting can cause serious pain, which can last for hours or even days. Although the sting is nonlethal, it can be potentially dangerous for young children, elderly people, and those with allergies such as anaphylaxis.


Daily Mail
13 hours ago
- Daily Mail
New study shows using marijuana triples risk of developing cancer
People who frequently use marijuana more than triple their risk of developing oral cancer , a new study found. About half of US adults say they have ever tried marijuana, with about 17.7million suffering from symptoms of cannabis use disorder (CUD) . The condition requires a formal diagnosis after fulfilling several criteria, such as using the drug despite the negative impacts it has on a person's life and relationships. University of California , San Diego researchers followed 45,000 people, some with cannabis use disorder, for five years. They discovered that daily smokers were 3.25 times more likely to develop oral cancer than those without the disorder. Dr Raphael Cuomo, an anesthesiology professor at UC San Diego School of Medicine who led the analysis, said: 'Cannabis smoke contains many of the same carcinogenic compounds found in tobacco smoke, which have known damaging effects on the epithelial tissue that lines the mouth.' Cannabis smoke packs a heavy load of toxic chemicals and carcinogens, about 2,600 of them, similar to tobacco smoke. But researchers are only recently getting a fuller understanding of what those chemicals are. They now know that marijuana smoke contains hundreds of polycyclic aromatic hydrocarbons (PAHs), benzene, and ammonia. These chemicals adhere to mucus membranes in the mouth, enabling carcinogens to seep into oral tissue. Meanwhile, THC, the psychoactive chemical in marijuana, can suppress crucial immune system pathways that would typically patrol for, and kill, those rogue cells. Of the more than 45,000 patients included in the study, 949 had cannabis use disorder. The group that did not smoke or smoked only occasionally remained either weed free or only occasional users over the five-year study. Over 97 percent were still abstinent or infrequent users by the time researchers followed up. During the study, 106 patients were diagnosed with oral cancer. Among people without CUD, the rate of oral cancer was 0.23 percent, which matches general population rates. However, among participants with CUD, 0.74 percent developed oral cancer. Oral cancer includes cancerous growths that develop in the mouth and throat, including the lips, tongue, gums, the floor of the mouth and the roof of the mouth. About one in 59 men and 1 in 139 women will develop oral cancer at some point in their lives. Oral cancers account for about three percent of cancers diagnosed in the US every year, with about 58,500 diagnoses and 12,250 deaths annually. Researchers said their findings will have implications for cancer screening practices in primary care and mental health settings, as patients with CUD often present with overlapping social and behavioral risk factors, including tobacco use, alcohol use, and a lower likelihood of engaging in preventive healthcare. People with CUD who were also tobacco users were 6.24 times more likely to get oral cancer. Age also played a role, with each additional year of age increasing cancer risk by about four times per year. Like tobacco smokers, marijuana smokers see damage to their lung and throat cells, leading to abnormal cell growth that can cause cancer and tissue changes. Those effects can occur in people who are not tobacco smokers, though, indicating that marijuana smoke can be just as harmful on its own as cigarette smoke. Dr Cuomo said: 'These findings add to a growing body of evidence suggesting that chronic or problematic cannabis use may contribute to cancer risk in tissues exposed to combustion products.' Their findings were published in the journal Preventive Medicine Reports . In the United States, marijuana is fully legal for recreational and medicinal use in 29 states. It is entirely illegal in four states. The majority of the public, about 88 percent , supports legalization, according to the Pew Research Center. But public health experts are raising concerns over potential long-term effects, of which scientists still do not have a complete understanding. In June, University of California researchers reviewed 24 studies involving 200million people to investigate the relationship between weed and cardiovascular disease, stroke and acute coronary syndrome (ACS) - a group of heart conditions in which there is reduced or blocked blood flow to the heart, such as a heart attack. They found there was a 29 percent higher risk of ACS among cannabis users, a 20 percent higher risk for stroke and double the risk of dying from cardiovascular disease, which includes coronary artery disease, heart failure and irregular heartbeats. Last month, findings from an FDA-run clinical trial were released, investigating dangerous liver enzyme spikes in people who consumed cannabis. The results showed that eight users of CBD, the substance derived from the hemp plant that's free of the psychoactive chemical THC, developed enzyme spikes above the safe threshold, raising the risk of chronic liver damage or failure. Seven people dropped out due to liver concerns between weeks three and four. However, everyone's liver tests normalized after quitting CBD. Meanwhile, regular use of potent cannabis in adolescence has been linked to long-term changes in brain structure, particularly in the prefrontal cortex, the region responsible for decision-making, emotional regulation, and impulse control. This is also the age when many psychotic disorders first appear. THC may trigger schizophrenia or psychotic episodes in individuals with genetic predispositions. A 2022 review by University of Bath researchers, which analyzed 20 studies involving 120,000 people, found users of high-potency cannabis were four times more likely to develop addiction and three to five times more likely to suffer a psychotic break compared to those using lower-potency strains. Earlier this year, a report in JAMA Network Open found that emergency room visits in Ontario, Canada, linked to schizophrenia in marijuana users tripled after legalization. Between 2006 and 2022, the rate of schizophrenia among those with cannabis use disorder climbed from four percent to over 10 percent. In contrast, just 0.6 percent of non-users developed the condition.