An Old Idea May Help Solve the Problem of Plastic Waste.

The researchers report in Biomacromolecules that their new material matches the stiffness, strength and compressibility of expanded polystyrene, a common packaging material that is the bane of many a rubbish dump. However, unlike polystyrene, it goes away once it has been dumped. An initial experiment suggested that 20% of it vanished within 18 days in a dump-like environment. A comedown, perhaps, from being a queen's brooch. But far more useful.

What we can do as a citizen to avoid plastic waste?

There are various thing we can do for the same:Use cloth bags for shopping instead of using plastic bags. I do not recommend paper bags as they require trees for their manufacture.Reuse the plastic bottles or jars for storing the goods like water, spices etc. If possible try to recycle the plastics. Should use bio degradable plastics. This is all I can think of right now. Will surely add more points if I can think of.Please add some more suggestions.And one last thing we humans can do whatever we want if we have set our mind on it.What we can do as a citizen to avoid plastic waste?.

15 ways to reduce plastic waste while traveling

Traveling offers a first-hand glimpse of just how catastrophic the world's plastic problem is. It's up to us to embrace sustainable travel and reduce our plastic footprint. Read on for 15 tangible ways travelers can take action and help make a difference. Since 2019 it's been estimated that our oceans contain 12.7 million tonnes of plastic. It's difficult to fully comprehend such a huge amount of plastic waste floating in our beautiful oceans and what that really means for sea life, underwater habitats and communities of people who live near the sea. The impact is devastating. It can be seen in shocking images of sea creatures trapped in plastic all tangled up or birds choking to death on plastic waste. Nobody needs persuading of how disastrous the problem of plastic waste is, but an important question to ask ourselves is what can travelers do to help? Committing to reduce single use plastic consumption is part of a much bigger picture of embracing sustainability as a whole. Sustainability is best known as these three pillars: economic, environmental and social. Sustainability comes from an ethical viewpoint about how to live well in a way that benefits the whole. It's about making decisions that are ecologically sound, community-minded and practical. Projects like Worldpackers offer travelers a way to collaborate with hosts to make the world more sustainable via bio-construction, permaculture, organic farming, social impact work and more. How to use less plastic when you travel Whilst many people may have got into a routine of reducing plastic at home, sometimes that can go out of the window on the road as people tend to opt for convenience. The fact that we are even backpacking around the world means that we are already in a privileged position and with that privilege comes a responsibility to do what we can to travel more sustainably. Plastic can take 1000s of years to break down so it's a matter of urgency that we all reduce plastic use. Here are 15 ways travelers can reduce their plastic consumption whilst on the road: 11. Say No Thanks. to plastic straws 15. Use matches instead of plastic lighters This is a biggie because understandably one of the main concerns for travelers is access to safe drinking water. However there are other solutions that do not involve buying plastic bottles everywhere you go. You can take a refillable bottle as most hotels, hostels and homestays should offer filtered water refills or at least boiled water. There's also the option of buying a bottle with an inbuilt filter or carrying purification tablets. It's really easy to get hold of lightweight, reusable bags that can pack up small and go in the pocket of your backpack on the road. If you always have a few with you wherever you go then you are guaranteed to not need to use plastic bags. There are countless times that people get given plastic forks, knives or spoons with their food, takeaway or otherwise. If you already have your own cutlery with you then you will never need to use plastic ones out of convenience. This is key for anyone's plastic-free journey whether at home or traveling. The great part about traveling with a bamboo toothbrush is that everyone else will see you using it and might be inspired to reduce their plastic usage too. If you drink a lot of coffee or tea then it's a really good idea to carry your own flask or thermos cup so that you never have to get a single use plastic takeaway cup. You will most likely want to feast on all the delicious street food that you can get all over the world but street vendors nearly always dish out their grub in single use plastic containers. If you travel with your own camping bowl or tub you could save a lot of that plastic going straight into the trash can. A lot of tourism companies are taking steps to actively reduce their plastic consumption and to offer more sustainable alternatives on the road. All it takes is a little bit of extra research to support companies that are aligned with your decision to travel more responsibly. 8. Rethink what toiletries you use For example rather than buying travel size toiletries every time you fly, keep the same 100 ml bottle to refill. Better still, ditch plastic bottles completely to use shampoo bars and bars of soap. You can invest in a reusable menstrual cup or re-usable period panties. Organic tampons and pads are also an option but washable pads, period pads and cups are even better as they can be used multiple times and do not have plastic packaging. You would be surprised how many places organize clean ups, not only is it a great way to clean our natural spaces of plastic but it helps to build community and make new friends. 11. Say No Thanks. to plastic straws If you really need to or want to use a straw for whatever reason then travel with a reusable straw. Otherwise just say no thanks to a straw when ordering your drink. Easy. It can be tempting to buy the cheapest of everything when traveling on a budget but it makes way more sense for the planet to spend a bit more on gear that will last rather than having to throw it away and replace it. Flying in itself is problematic for the environment but if you do have a flight then try to make it as plastic-free as possible. Airlines love wrapping everything in plastic but you can be one step ahead. Take your reusable water bottle in your hand luggage. Bring your own earphones and blanket so you do not have to use the ones provided wrapped in plastic. You do not have to go round preaching about plastic-free living but you can start conversations with other travelers, local businesses, street vendors and whoever else to raise awareness of the plastic issue. 15. Use matches instead of plastic lighters Whether you need to start a campfire, light candles, smoke or light up a gas stove, you can carry matches instead of plastic lighters. When it comes down to it, these are all relatively easy switches to make or things to do. Reducing our plastic footprint on the road simply requires a bit of thought and pre-planning. Plastic is everywhere so it's easy to just accept it as the way things are. However it is our responsibility, as travelers, to do our own research and take action where we can. Let's start a conversation. If you have any other ideas or ways to reduce plastic on the road, please comment.

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What Are Araya Rims Made of? Should I Replace Them?
Um from experience new 700c wheels have curve in the rim wall so the tire bead stay even at high pressure .but that nice vintage aray rim wall has no curve in the rime because it was not designed for high pressure tires . Old rims mostly was disigned for low pressure gumwall tire for a comfortable ride . In the bicycle world the old bouncy steel smooth tire 10 speed was considered a Cadillac because of its smooth ride.^,^1. Have any experiments been performed on the magnetic properties of neodymium at high pressure and temperature?Do not think that pure Nd is ferromagnetic (maybe it's antiferromagnetic?), so your question about the Curie temperature really applies to just certain ferromagnetic alloys of Nd. Not aware of any high-P studies on those ferromagnetic alloys offhand. I was a co-author of a paper that looked at the magnetic properties of the heavy lanthanides (which are ferromagnetic) under pressure, and we found that their Curie temperatures dropped with pressure at a $dT_c/dP$ rate of around -10 to -20 K/GPa (See High-pressure magnetic susceptibility experiments on the heavy lanthanides Gd, Tb, Dy, Ho, Er, and Tm). If Nd alloys have $T_c's$ which drop at similar rates, then I would not expect any magnetism in them at the pressure and temperature of the core-mantle boundary (140 GPa and 5000 C)2. 3 ton tempstar heatpump with a 3.5 ton airhandler on a 45 deg, day what should the low and high pressure be?I very much doubt a setting done by a technician charging a system such as yours. First, you cannot do that with two gages. Its not even possible, and second there is NO exact pressure setting for a given system. It depends on air pressure, humidity and relative humidity to set the charge of gas correctly which would result in a "correct pressure " reading. The method most commonly used is a "super heat" method. Here a sling is swirled thru the air and the RH of the air is determined. Next, the exit air from the air blower inside the house is determined. Along with the outside and inside air temps. Then and only then, a chart inside the cabinet of the AC or heat pump is read to find the correct charge pressure. Without taking any of these needed measurements, no pressure reading can be determined. What is happening nation wide is the charging of these new high efficiency units is being done incorrectly, and given that the efficiency numbers that people paid so much for to get (the SEER) are no where near reached. Ive yet to see a service tech ever properly charge a system NEVER ever saw it done. If you want to find out exactly how to charge an AC and what pressures your system is required to have for a given temps and given RH. get a manual and read it as that is a very good way to learn about it so you would never be fooled. X Trane Engineer.3. Metal Halide vs High Pressure Sodium for plants?Be careful as these lamps generate a lot of heat. You will need some sort of ventilation to avoid overheating the plants. Keep in mind law enforcement agencies look for thermal signatures to find illegal pot production.4. Easy questions about weather?! Ten points!?Atmospheric pressure at the Earth's surface is one of the keys to weather, which is one reason weather maps feature H's and L's, representing areas of high and low air pressure. High and low pressure areas are important because they affect the weather. The weather maps, such as those on television, show what is happening at the Earth's surface, and that's what we are talking about here. As the name says, a "high" is an area where the air's pressure is higher than the pressure of the surrounding air. A "low' is where it's lower. Meteorologists do not have any particular number that divides high from low pressure; it's the relative differences that count. The pressure is high at the surface where air is slowly descending - much too slowly to feel. And, this is going on over a large area, maybe a few hundred square miles. As air descends, it warms, which inhibits the formation of clouds. This is why high pressure is generally - but not quite always - associated with good weather. The air that descends in high-pressure areas has to get to high altitudes in some way, and its done by rising in areas where the pressure at the surface is low. As air rises it cools. As the air cools, the humidity in it begins to condense into tiny drops of water, or if it's cold enough, into tiny ice crystals. If there's enough water or ice, rain or snow begin to fall. This is why low pressure is associated with bad weather. As shown in the graphic above, the air descending in high pressure flows out in a clockwise spiral in the Northern Hemisphere. Air flowing into an area of low pressure rises, making a counterclockwise spiral on the way in.
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