Heat Waves Could Make South Asia Unlivable by 2100

Debasish Ghosh, Wikimedia Commons // CC BY-NC-ND 2.0
Debasish Ghosh, Wikimedia Commons // CC BY-NC-ND 2.0

Scientists say increasing greenhouse gas emissions in densely populated parts of South Asia will push temperatures past the "upper limit on human survivability." They published their findings in the journal Science Advances.

The human body can only withstand so much heat, and the authors of the current paper note that 35°C (95°F) pushes that upper limit. Anything above that will result in death "even for the fittest of humans under shaded, well-ventilated conditions."

This 95°F maximum is what's called a wet bulb (TW) measurement. Like the heat index, TW considers humidity as well as air temperature, which means it's a more accurate measurement of how well our bodies can naturally cool themselves down. The muggier the climate, the higher the TW. And in places like India, the TW is pretty darn high.

The research team combined climate data from Pakistan, Nepal, India, Bangladesh, and Sri Lanka with information about current and estimated future greenhouse gas emissions in those countries.

With these combined data points, they created two possible scenarios: the "business as usual" model, in which the region's rapidly growing economy continues to produce more and more air pollution; and the "mitigation" model, in which something is done to slow, if not stop, emissions.

Neither outcome looked particularly good, but there was a big difference between them. The business-as-usual model indicated that average temperatures will easily reach TW 95°F by the year 2100. For the mitigation model, that number was closer to TW 88°F.

Historic and projected temperatures from 1975 (L) to 2100 (R).Im et al. 2017. Science Advances.

These were just the total averages. Some regions were far worse off than others. In either situation, poorer agricultural communities in India will be hit the hardest—a particularly dangerous outcome in areas where most people live without air conditioning.

"This disparity raises important environmental justice questions beyond the scope of this study," the authors write. "The findings … may present a significant dilemma for India because the continuation of this current trajectory of rising emissions will likely impose significant added human health risks to some of its most vulnerable populations."

Kodak’s New Cameras Don't Just Take Photos—They Also Print Them

Your Instagram account wishes it had this clout.
Your Instagram account wishes it had this clout.
Kodak

Snapping a photo and immediately sharing it on social media is definitely convenient, but there’s still something so satisfying about having the printed photo—like you’re actually holding the memory in your hands. Kodak’s new STEP cameras now offer the best of both worlds.

As its name implies, the Kodak STEP Instant Print Digital Camera, available for $70 on Amazon, lets you take a picture and print it out on that very same device. Not only do you get to skip the irksome process of uploading photos to your computer and printing them on your bulky, non-portable printer (or worse yet, having to wait for your local pharmacy to print them for you), but you never need to bother with ink cartridges or toner, either. The Kodak STEP comes with special 2-inch-by-3-inch printing paper inlaid with color crystals that bring your image to life. There’s also an adhesive layer on the back, so you can easily stick your photos to laptop covers, scrapbooks, or whatever else could use a little adornment.

There's a 10-second self-timer, so you don't have to ask strangers to take your group photos.Kodak

For those of you who want to give your photos some added flair, you might like the Kodak STEP Touch, available for $130 from Amazon. It’s similar to the regular Kodak STEP, but the LCD touch screen allows you to edit your photos before you print them; you can also shoot short videos and even share your content straight to social media.

If you want to print photos from your smartphone gallery, there's the Kodak STEP Instant Mobile Photo Printer. This portable $80 printer connects to any iOS or Android device with Bluetooth capabilities and can print whatever photos you send to it.

The Kodak STEP Instant Mobile Photo Printer connects to an app that allows you to add filters and other effects to your photos. Kodak

All three Kodak STEP devices come with some of that magical printer paper, but you can order additional refills, too—a 20-sheet set costs $8 on Amazon.

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Lead from the 2019 Notre-Dame Cathedral Fire Detected in Paris’s Beehives

Veronique de Viguerie/Stringer/Getty Images
Veronique de Viguerie/Stringer/Getty Images

It's been over a year since a fire destroyed Notre-Dame's iconic spire in April 2019, and we still haven't determined the blaze's full effect on the environment. As Smithsonian reports, evidence of pollution from the incident has been found in an unusual place: Paris's beehives.

A new study published in the journal Environmental Science & Technology Letters explains that hives located downwind from the Notre-Dame fire contained honey with high concentrations of lead. As the cathedral's roof and spire burned, 450 tons of lead melted in the extreme heat, releasing hazardous particles into the air. While lead had clearly settled into the structure itself—making it unsafe to reopen to the public even after it was renovated—the question remains of how far the toxic materials spread beyond the site.

The study shows that at least some lead managed to travel a few miles away from the church. Honey sampled three months after the blaze from hives downwind from the Notre-Dame fire contained four times as much lead as honey from the Parisian suburbs, and 3.5 times as much as Parisian honey collected before April 2019.

This doesn't mean that honey from certain Paris neighborhoods is unsafe to eat. The sample with the highest numbers, taken from a hive 3 miles west of the cathedral, contained 0.08 micrograms of lead per 1 gram of honey. The European Union allows honey to be sold with lead concentrations up to 0.10 micrograms per gram.

“The highest levels of lead that we detected were the equivalent of 80 drops of water in an Olympic sized swimming pool,” study co-author Dominique Weis, director of the University of British Columbia's Pacific Centre for Isotopic and Geochemical Research, said in a statement. But what the findings mean for homes and businesses in Notre-Dame's surrounding area-where environmental lead samples have exceeded the safety guidelines 20 times over in some spots—is still unclear.

[h/t Smithsonian]