This is not surprising with the key factor being they are limiting the finding to the content of the garbage patch and they are using weight rather than item count.
I'm currently obsessed with picking up beach plastic - 4000 lbs and counting - in Washington state. The beaches are located on the northwest shore of Puget Sound, the south shore of the strait of Juan de Fuca and the northern Pacific coast.
Each area has dramatically different composition. But in all three the general statement that fishing and aquaculture flotsam dominate is true (on a weight basis). To be sure there are more food wrappers, bags, straws, lighters, shot gun wads, sytrofoam and the like in the inland waters of puget sound but there are huge quantities of aquaculture debris and it is generally in heavier denser pieces that end up being something like 75% of the weight. On the outer coast there are nets, floats and ropes but also endless streams of plastic bottles and quite a number of shampoo, condiment and other misc. bottles. I suspect these later items are also coming from fish boats. On the Washington coast I would say 90% of the debris weight is from commercial shipping and fishing.
Another observation is the inland water trash looks like accidents rather than dumping. With so many people living around the sound there are lots of little incidents leading to stray zip lock sandwich bags, candy bar wrappers and the like. In some ways it is surprising there is not more trash on the beach.
Here, shopping bags and produce bags are rare where as the other items I've listed are pretty common. Bag bans and straw bans will not make a significant difference here. Things that would make a difference include:
- make local aquaculture pay for the debris that is found on the beaches so they have more incentive to contain their flotsam
- finding alternative materials for single serving package food wrappers or not eating or drinking them (especially water and beverage bottles)
- consider banning styrofoam take out containers. They break up into small pieces quickly and are getting more prevalent.
- getting shot gun shell manufacturers to stop using plastic wads (they are everywhere)
Surprising amount of misinformation in this thread.
A real heat pump is more than a reversing valve. Primarily there needs to be an ability to defrost. And for package terminal units there needs to be a way to collect defrosted condensate from the exterior coil and drain it to the interior where ice is not a problem.
But the main expense here is that super efficient AC and newer heat pumps utilize inverter driven multi-speed compressors rather than a single speed compressors. This leads to very high cooling efficiencies and in heating mode allows the heating capacity to be maintained to very low temperatures. It is true that in climates with temperatures below -15F there can be issues with insufficient capacity but there are plenty of units operating in cold climates and specific code climate heat pumps that deliver the design capacity down to -20F.
In most heating climates heat pumps are an extremely important technology for carbon reduction assuming grids start replacing coal fired generation with renewable energy sources. There is even a carbon reduction with gas generated electricity with a heat pump compared to a gas furnace.
R32 has a small impact on efficiency but the benefit is a much lower greenhouse gas impact if the refrigerant leaks out. This is important but generally of smaller effect than the energy savings from the inverter.
There are never any bugs you haven't found yet.