r/Sustainable

[Academic] Sustainable Packaging Survey
▲ 7 r/Sustainable+7 crossposts

[Academic] Sustainable Packaging Survey

Hi everyone, I'm conducting a survey my academic research project on sustainable packaging.

I'm studying what consumers think about everyday packaging and whether they'd be willing to switch to more sustainable alternatives if they're practical and convenient.

I would really appreciate the help!

docs.google.com
u/Famous_Data_5365 — 6 hours ago

certified organic vs just "natural" labeling

Does anyone else only look for actual third party certifications when buying daily products? Honestly I am so tired of the greenwashing. Every second brand slaps a green leaf on the bottle, writes natural in big letters, and calls it sustainable. But when you check the back it is just standard cheap chemicals and synthetic fragrance.

Lately I have been trying to find brands that actually do small batch production and hold real organic certifications. For skincare I found an australian line called mukti organics that uses verified ingredients and glass packaging. It made me realize how hard it is to find companies that don't just fake it for marketing.

What specific eco labels or third party certifications do you guys actually trust to avoid greenwashing? Looking for recommendations for household and personal care stuff.

reddit.com
u/FS_BreakingNews — 3 days ago

Anti-fast-fashion law finally passes in France: French Parliament definitively approved the bill aimed at reducing the environmental impact of the textile industry in the country.

ww.fashionnetwork.com
u/HenryCorp — 4 days ago

Pakistan's solar miracle – how the hell did they do it? Faced with constant electricity blackouts and a failing grid, people in Pakistan took matters into their own hands. The result is a lesson for the rest of the world, and also a warning.

thenewworld.co.uk
u/HenryCorp — 4 days ago

Net zero , are we ready

Net Zero is transforming the plumbing and heating industry—but are we asking the questions that matter? As the drive for heat pumps and low-carbon heating gathers pace, are we sacrificing affordability, reliability and consumer choice in the race to hit targets? Is the industry being driven by evidence or policy? Join the conversation. Bantervan.

u/Icy_Marketing_6871 — 4 days ago
🔥 Hot ▲ 5.8k r/Sustainable+7 crossposts

AI data centers do not need to use water like they do, there are alternatives

7 Types of Cooling Techniques for Data Centers

Introduction to Cooling Techniques in Data Centers

Data centers are critical facilities that house computer systems, servers, and associated components. As these devices operate, they generate significant amounts of heat, which can reduce system performance and longevity if not adequately managed. Effective cooling solutions are paramount to ensure operational efficiency and maintain system reliability. This article explores seven common cooling techniques utilized in data centers.

1. Air Conditioning

Air conditioning units are one of the most traditional methods for cooling data centers. These systems use refrigerants and compressor technology to lower the temperature of the air. Cold air is then circulated throughout the facility to absorb the heat generated by the servers before being cycled back to the air conditioning unit for re-cooling.

2. In-Row Cooling

In-row cooling involves placing cooling units directly adjacent to server racks. This setup minimizes the distance that cold air travels before reaching the servers, which enhances cooling efficiency and effectiveness. The cooled air is directly targeted at the heat source, providing localized cooling for high-density configurations.

3. Liquid Cooling

Liquid cooling systems use a liquid coolant to absorb heat directly from the servers. This method typically utilizes water or a glycol mix, circulated through pipes and directly cooling components either via direct contact or through heat exchangers installed within the server racks. Liquid cooling is particularly effective at managing the high heat loads of modern data centers.

4. Free Cooling

Free cooling leverages external environmental conditions to assist in the cooling process. This technique can be employed in cooler climates where the outside air temperature is sufficiently lower than the desired data center temperature. By using economizers, outside air is brought in to cool the facility, significantly reducing the reliance on mechanical cooling.

5. Hot Aisle/Cold Aisle Configuration

This configuration involves the physical layout of server racks in alternating rows with hot aisle and cold aisle. The cold aisles face the AC output ducts, while the hot aisles face the AC return ducts. This arrangement helps keep the hot exhaust air from the servers separate from the cooled intake air, improving overall cooling efficiency.

6. Rear Door Heat Exchangers

Rear door heat exchangers (RDHx) are attached to the back of server racks, acting as a radiator that cools the air as it exits the server. The heat exchanger uses a coolant to absorb heat from the warm air ejected from the servers. This system allows for immediate cooling of exhaust without mixing it with the surrounding air, enhancing the cooling efficiency.

7. Immersive Cooling

In immersive cooling, server components are completely immersed in a non-conductive liquid. Heat from the servers is transferred directly to the liquid, thereby reducing the need for active cooling components like fans within the servers, which also leads to significant energy savings. This method is an emerging technology that is becoming more viable as heat loads continue to increase.

Conclusion

Choosing the right cooling strategy for a data center depends on several factors including geographic location, energy costs, environmental considerations, and the specific hardware used. As data centers continue to evolve, these cooling technologies are also being refined to provide more energy-efficient and cost-effective solutions to meet growing cooling demands.

https://www.thermal-engineering.org/7-types-of-cooling-techniques-for-data-centers/

Video source: itskaylajaiden

u/ChimeInTheCode — 7 days ago

Five Americans die every hour from toxic vehicle emissions, new study finds. Research suggests 41,800 premature US deaths in 2024 were attributable to road pollution.

theguardian.com
u/IheartGMO — 5 days ago
▲ 359 r/Sustainable+2 crossposts

A Small Contribution to a Greener Bengaluru 🌿

Today (27-06-2026)
I signed up for Bengaluru’s city-wide tree plantation drive this weekend and spent about three hours at one of the planting sites.
Apart from planting 60+ saplings, a good chunk of the time went into unloading and moving saplings around so different teams could keep planting without stopping. It gave me a new appreciation for how much logistics goes into an event of this scale.
There were volunteers of all ages, and things were surprisingly well organized. The aim was to plant around 15 lakh saplings in a single day as part of a Guinness World Record attempt, which is an incredible number to think about when you’re standing in the middle of it.
The only thing I’m hoping for now is proper maintenance. Planting is the easy part—watering, protecting, and caring for the saplings over the next few years is what will actually make a difference.
Did anyone else here participate? I’d love to hear how your site was organized and what your experience was like.

u/Suspicious_Code1493 — 8 days ago
▲ 2 r/Sustainable+1 crossposts

Is Biogas plant a successful business?

If setup is mid to large scale, with Napier grass and other organic waste, is it viable? Does anybody has any experience with it?

reddit.com
u/Witty_Possession_545 — 5 days ago
▲ 106 r/Sustainable+1 crossposts

Environmental damages of the top ten percent consumers exceed global climate and biodiversity funding gaps

nature.com
u/burtzev — 7 days ago

Are we actually prepared for a future with extreme heat or are we just reacting to it?

Hello everyone! 👋

Since it's the peak of summer, i was just sitting and thinking about how every year seems to be hotter than the last It made me wonder why is extreme heat increasing so much every year Is it mainly because of climate change rapid urbanization, deforestation, or are there other factors were overlooking over the past few years, heatwaves haven't just become hotter, they've become more frequent and longer lasting events that were once considered rare now seem to happen almost every summer what concerns me is that most of our response still feels reactive. We rely more on air conditioning, governments issue emergency heat alerts and people adjust their daily routines. While these measures help in the short term, they don't seem like long-term sustainable solutions If extreme heat continues to become more common, are our cities infrastructure, and energy systems really prepared to handle it sustainably Or are we simply responding to each new heatwave without addressing the bigger problem i'm genuinely curious to hear different perspectives. What do you think is the biggest reason behind rising temperatures every year And what do you think real sustainable adaptation should look like greener cities, better urban planning, renewable energy, more trees, or something else?

What do you all think about this topic???

reddit.com
u/Dhirenk_TechMind — 10 days ago
▲ 13 r/Sustainable+2 crossposts

My wife and I have been on Kindred for about a year now, with over 50 nights hosted and booked. We're expats living in Valencia, Spain, and home swapping has become a real part of how we travel. Here's the unfiltered version of how it's gone.

It’s different than booking an Airbnb

I came in treating it like a standard booking platform. Specific dates, specific cities, specific requirements. If you approach Kindred like Airbnb, you'll likely get frustrated. It takes some patience and a bit more work than popping in dates to book something immediately.

You will likely interact with the host through a few messages before you are approved to stay. I don’t mind it because I like to get a feel for who will be staying in my home as well.

What Actually Works

Flexibility is everything. Using Kindred without locking in rigid dates and locations opened things up for me and started finding a lot more stays. Kindred rewards members who can adapt. If you can say "sometime in May" instead of "May 14 to 18," you're going to have a much easier time.

The easiest approach we've found: if you're open to traveling anywhere, browse homes you love and book one. Then plan your trip around the Kindred you booked. It sounds backwards but it works really well and takes a lot of the frustration out of the process of the booking process.

If you already have a trip planned and need a specific city and dates, it gets harder. What we do in that case is check the app daily to see if something new has popped up, then request to book quickly before someone else does. It takes patience but it does work more often than not.

In these situations, we always also have a backup plan. We will book something for our stay elsewhere that has free cancellation. Then, if we find a Kindred, we will cancel the existing reservation. We just did this for a 4 night stay in Dublin. It saved us $1,200!

Cleaning (This Is Huge for Us)

This doesn't get talked about enough. My wife and I both work while we travel, so we genuinely do not have time to strip beds, deep clean, and prep a home before we leave, whether that's our own place or someone else's. The fact that professional cleaning is included on both ends has been a game changer for us. It's one of the main reasons we've stayed on the platform as long as we have.

That said, it hasn't been perfect. We had one experience where the cleaning at our home was subpar and didn't meet the standard we expected. It was disappointing, but Kindred's support team was responsive about it. Worth knowing going in that the quality can vary.

The Numbers After One Year

We've saved approximately $5,500 through Kindred over the past year. That's money that would have otherwise gone to hotels or Airbnbs. This is honestly what keeps us coming back despite it taking a bit more work than simply booking elsewhere.

Where I'm At Now

We've hosted a lot and built up a decent credit balance, but finding stays for trips we already have planned is still the hardest part of using this platform. It's a real supply and demand issue and something I'd like to see improve. The daily check-in habit helps, but it's not ideal for everyone.

Still, the value when it works is genuinely hard to argue with. Staying in real homes, in real neighborhoods, at a fraction of what hotels or Airbnbs would cost, adds up fast over a year.

For Anyone Curious About Trying It

If you've been on the fence, I have a referral code that gets you 5 free nights immediately after approval and helps move your application along faster. Just DM me and I'll send it over.

Happy to answer questions in the comments too.

TLDR: After a year and 50+ nights, we've saved around $5,500 through Kindred. Book a home you love first, then plan the trip around it. The included cleaning is a standout perk, especially if you work while you travel. It's not flawless, but for frequent travelers who can adapt, the value is real. DM me for a referral code and 5 free nights to get started.

reddit.com
u/Gingerbutt81 — 12 days ago