Could the campus work toward sustainability by: not watering sidewalks, not replacing sod every year, adding pollinator gardens where possible, not bagging leaves in plastic bags, and using electric instead of gas powered machines (Pitt changed that quite a few years ago)? It would be good to see sustainability at work in our most community-oriented venues, like our natural spaces.
We have some! They're just pointed at Earth for spying purposes. Basically, the defense sector has enough money in it to overcome the huge engineering challenges of putting such a large radio dish into orbit, while academia generally doesn't. The few science oriented ones that have gone up seem to have been intended to work in tandem with ground-based observatories for very long baseline interferometry (VLBI), allowing resolution of much longer wavelengths than can be spotted from Earth alone. For fun, I'm going to follow the chain of prerequisites to put a radio telescope on an asteroid for some extreme interferometry. Let's say that we decided to produce all the circuit boards on Earth, where we have production facilities worked out already. To minimize the mass we need to move out of Earth's gravity well, as much of the rest as possible needs to be manufactured beyond high Earth orbit. ("Halfway to anywhere" in the solar system, in terms of acceleration.) So, it implies the ability to produce ultraprecise motors on, say, the moon, along with at least simple rocket engines to get them to the destination. The machinery sent would need to be able to unpack itself, assemble a telescope, and maybe have some additional means of launching chunks of the asteroid into space to change its spin if the native one is inconvenient. After it's out there, how do we power all the machinery? If the asteroid is sufficiently close to the sun we could send out some truly massive solar cells (likely needs cooling fluid), but if we want an asteroid in the main belt then that's probably getting a bit thin for the power needs of even very efficient motors in the quantity we're likely to need. Probes like Cassini (RIP) are powered by thermocouples attached to a block of non-enriched plutonium that warms ever so slightly from radioactive decay, but that's an even smaller trickle. The brand new thing in R&D circles is micro-scale fission reactors, so we'll probably just have to hope that pans out and can also be produced on the moon. In short, the big hurdle is getting to a high-quality manufacturing base beyond the surface of a planet. After that, electricity. Everything else is trivial by comparison.
There is actually a project proposed by NASA a couple of years ago to build a radio telescope on the far side of the moon. It would take advantage of the shape of a crater to build an Arecibo/FAST-like structure and it would perform well in terms of shielding from all of the earth's RFI. At the moment it's more of a dream than a reality because missions to the moon are not that suitable to perform at all if your intention is to send and deploy vast amounts of equipment (and also assuming that the telescope doesn't require many additional service missions like Hubble)
SEAWEED REVOLUTION Marine flora can help to reduce world hunger, pollution, the impact of climate change, disease, biodiversity loss and social inequality. What would the world look like if we fully exploited its potential? by Vincent Doumeizel S eaweed, undoubtedly the world's greatest untapped resource, has been largely spurned by our society. Often misunderstood and seen as a form of pollution, the climate emergency and global population growth are now pushing us to reconsider this overlooked treasure. The fact is that these species of marine algae offer an endless source of innovation and concrete solutions that could help us address some of the major challenges facing our generation. If we learn how to grow it sustainably, seaweed could feed people, replace plastic, decarbonise the economy, cool the atmosphere, clean up the oceans, rebuild marine ecosystems and reduce social injustice. An essential pillar of life on earth, seaweed reproduces quickly and can grow dozens of metres in a few days without needing food, fresh water or pesticides. If we want to rebuild ecosystems instead of destroying them, seaweed is an excellent place to start. Turning hope into reality I was invited onto a radio programme recently and the journalist asked the speakers to sum up seaweed in one word. The oceanographer sitting next to me thought for a moment, and then chose a simple word: 'hope'. To what extent can seaweed represent a new hope for the world of tomorrow? Each of us holds part of the answer. It is our joint www.thersaorg responsibility to turn hope into reality. To dream of a world where the economy's only aim is to repair ecosystems and improve social justice is perhaps utopian but, throughout history, the 'utopians' have made many advances that seemed far-fetched to their contemporaries. Over the past 70 years, utopians developed food systems that have dramatically reduced the number of people dying of hunger. Utopians have also fought to achieve higher literacy rates, gender equality, greater tolerance of minorities, the establishment of democratic regimes in half of the world's countries and a historic reduction in the number of armed conflicts. We owe a great deal to those who have chased these utopias. So let's all become ocean utopians for a moment and ask ourselves: what would the world be like in 2050 if we fully integrated seaweed, and the ecosystem it supports, into the way the world functions? Imagining success It's New Year's Eve 2050, and seaweed features on most dinner menus. We are now aware of the benefits of seaweed, both for the environment and for our health. Our eating habits, respect for the environment and knowledge. of our bodies have changed enormously. Seaweed is also trendy among young people, who have increasingly turned towards a plant- based diet. Vincent Doumetzel is Senior Adviser on the Oceans to the UN Global Compact and Director of the Food Programme at the Lloyd's Register Foundation. This article has been excerpted and adapted for the RSA from his recent book, The Seaweed Revolution 31
I hope you do well. I checked out your RU-vid channel and your content is amazing! but, Your video should rank But your video has no SEO 100% SEO has 0% SEO
The real climate change will ensue after the rapture of the true Church of Jesus Christ- the born again ones by faith in Jesus Christ! Study Revelation 9- 16 and you will see what really and truthfully lies ahead! These climate alarmist are deceiving folks, as earth's creator said in Genesis 8;22, after the deluge of Noah's generation and the destruction of the ante-deluvians, that day/night, heat/cold, summer/winter, springtime/harvest would continue as long as the earth abides! I am 67 years old and see the changes every year! The sun is the reason for climate change, not the burning of fossil fuels! These are lies to enslave people with their burdens, but not to be placed upon themselves! I will not comply!
Today there are 8 billones of population around the world wide but only a few know than is the gas ozone and so has been formated this connection oxygen and oxygen since billones of years ago
It should say Population Control instead of Climate Change. Setting fires and bombing countries and nuking the atmosphere with hydrogen bombs, has nothing to do with natural disasters. It's all man made, that is for sure. People who breathe, work and live aren't causing Climate change. Greedy, wealthy Ugenicists are.
