Năng lượng miễn phí Fusion?Quốc gia Ignition cơ sở mục tiêu phòngCó thể các sự kiện có ảnh hưởng nhất duy nhất trong quan tâm của công chúng trong khoa học và công nghệ (không phải đề cập đến một trong cuộc phiêu lưu lớn nhất của loài người), nhiệm vụ Apollo 11 xúc động những ước mơ tập thể của hàng triệu, trong khi đẩy khoa học và công nghệ nhanh chóng chuyển tiếp ở một tốc độ chưa từng thấy.Nhưng trong những thập kỷ kể từ khi người đàn ông đầu tiên đi bộ trên mặt trăng, khoa học đã tiến rất nhanh chóng công nghệ mà ngay cả một vài năm trước đây có thể đã được coi là kỳ diệu đã trở thành phổ biến. Mặc dù vậy, nó sẽ là ngây thơ để thừa nhận rằng Apollo 11 bao giờ đại diện khoa học và công nghệ của đỉnh cao, và rằng không có gì sắp tới sẽ tương tự như vậy nổ của thế giới tập thể những giấc mơ và nhận thức về những gì nó có nghĩa là con người.Vì vậy, những gì là tiếp theo? Những gì sẽ là các sự kiện trên toàn thế giới tiếp theo hoặc khám phá rằng về cơ bản những thay đổi cách chúng ta nhìn vào bản thân và vũ trụ mà chúng ta sống trong?Khi Tổng thống Kennedy đã đặt ra kế hoạch của mình để đưa một người đàn ông trên mặt trăng ông đã làm như vậy trong một thế giới mà chỉ có trở thành acclimated đến nhanh chóng tiến công nghệ. Điện hạt nhân, truyền hình, động cơ phản lực, vệ tinh và máy tính đã chứng minh rằng chỉ phạm vi của trí tưởng tượng của chúng tôi hạn chế sự tiến bộ của chúng tôi. Bởi khó khăn Mỹ để đi đến mặt trăng, Kennedy buộc nước để mở rộng trí tưởng tượng của mình để đáp ứng các khả năng của khoa học.Vì vậy, để vinh danh những kỷ niệm lần thứ 40 của mặt trăng đích, chúng tôi đã lắp ráp một thành tựu khoa học danh sách mà chắc chắn sẽ phá vỡ chúng tôi nonchalance về công nghệ tiên tiến, thu giữ psyches trên toàn thế giới cùng một lúc.Clearly, this list is incomplete, and we'd like you, the readers to add to it. What scientific or engineering project, discovery, or advance do you think could inspire and impress the people of today like the moon landing did 40 years ago? Have we, as a civilization, moved past the propensity to marvel at technological progress, or can a sufficiently impressive advance still illicit awe? We look forward to reading your additions to our list, your arguments for and against them, and your general observations about the ability of science to inspire. Now, let's take a look at the list:Mars, Our Next Stop?A Manned Mission to MarsEver since the moon landing, humans (including those who've walked on the moon) have looked past the moon to Earth's next closest neighbor: Mars. Travelling to Mars is of course vastly more difficult than travelling to the moon, but if anything can become a worldwide moment as Apollo 11 did, it would be humans walking on another planet for the first time.Where We Are Now: During the Bush Administration, and especially under the tenure of NASA Administrator Michael Griffin, manned missions to Mars received a great deal of support. However, the Obama Administration is far less taken with the idea of manned spaceflight, and has scalled back many programs considered necessary for an eventual mission to Mars.Even if the political will was there, right now, the technology isn't. There is currently no shielding strong enough to protect the astronauts from the high power cosmic rays that would constantly bombard them during the trip. These highly charged particles cause cancer, and damage the astronauts' eyes and brains. Additionally, being stuck in a tin can adrift in space for the 500+ day journey (one-way) doesn't exactly do wonders for the psyche, and most research catalogues a range of problems resulting from the cramped, precarious and monotonous living conditions.All of this adds up to journey that reduces fit, PhD-graduate astronauts to blind, brain-damaged lunatics who probably couldn't get it together enough to land the ship when they did eventually reach Mars.What Needs To Happen: Designing a rocket that can travel to Mars and back is actually the easy part. Dealing with the shielding and the health problems caused by the trick form the real problem. Cosmic rays travel at nearly the speed of light, so any physical shielding thick enough to stop them built from current tech would likely be too heavy to get into orbit. Luckily, cosmic rays are charged particles, and thus easily manipulated by magnetic fields. Current thinking focuses on magnetic shielding that would redirect the rays around the spaceship, rather than block them outright.On the psychology front, a recent European study locked six scientists in a simulated spacecraft for 105 days, and none of them succumbed to space madness. This year, another team of six will be locked in the simulator for the full 520 days a Mars mission is expected to take. The results of that test will provide a wealth of data needed to design the psychological program that will keep the astronauts mentally fit to perform their duties.Chances It Will Occur Within A Decade: Nil. The technology could certainly be developed, but right now, the political will (yet alone the financial support) just isn't there.Arecibo ObservatoryThe Discovery of Alien LifePart of what made the Apollo mission so awe inspiring was that looking back at a unified, fragile planet adrift in a cold and terrifying void made us reconsider who we were as a species, and our species' place in a vast universe. The discovery of alien life, even if that life amounts to nothing more than a string of protein or some nucleotides, would undoubtedly prompt that same kind of introspection about the role of life in the cosmos.Where We Are Now: The Mars rock ALH84001 famously contained what some believe are fossils of Martian nano-bacteria, as well as some biological material--but whether these are in fact Martian in origin or the result of Earthly contamination has yet to be solidly confirmed. Additionally, SETI continues to harness computers and telescopes worldwide, searching for signals from intelligent life, and the Voyager probes have left our solar system with solid gold records that serve as a message for any ET that happens to find them.What Needs To Be Done: The current thinking is that the best place to look for extraterrestrial life is on Jupiter's moon Europa. Europa has a vast ocean, as well as a good deal of oxygen in its atmosphere. The combination of water, oxygen, and energy from the gravitational pull of Jupiter have led some scientists to theorize that organic molecules might form life at the bottom of Europa's oceans, similar to the life that formed on undersea volcanic vents on Earth.Chances It Will Occur Within A Decade: Hard to say. There are no missions planned to explore Europa, but who knows when another chunk of Mars might fall out of the sky with more definitive evidence.Ivy Mike Mushroom CloudFull Nuclear DisarmamentNuclear weapons vexed the conscience of science since before they even physically existed. Eliminating them would not only greatly reduce the chance of mass human catastrophe in the world, but allow science to atone for one of its most divisive creations.Where We Are Now: Since peaking in the 1980's, the number of nuclear weapons has significantly dropped following the end of the Cold War. Additionally, the US and Russia just agreed to reduce their arsenals by a quarter over the coming years.
However, Russia and the US still maintain a nuclear stockpile of thousands of weapons each, and countries like Israel, Pakistan, India and North Korea continue to avoid the Nuclear Non-Proliferation Treaty. But paradoxically, since the US and Russia own 95 percent of the world's nuclear weapons, the total number of weapons in the world continues to drop, even while the number of nuclear armed states rises.
What Needs To Be Done: While the scientists that actually worked to create the first atomic bomb significantly influenced the debate over the use of nuclear weapons in the early days of the Cold War, the power of scientists to affect the debate about nuclear weapons has declined precipitously. Scientists continue to be active in the disarmament/nonproliferation community, but this is effectively a political problem now.
Chances It Will Occur Within A Decade: For total elimination, barring an extreme Prozac-in-the-drinking-water-type mood shift in the world's political scene? Not great. Promising, though, is that last 10 years saw the number of nuclear weapons cut in half, with even further reductions on the way. While a world with zero nuclear weapons may still be far off, it's not unrealistic to imagine a 2020 with significantly reduced stockpiles.
Free Fusion Energy?
The National Ignition Facility Target Room
Free Energy
The cost of energy, especially energy derived from fossil fuels, feeds into a wide range of problems around the world--foremost of course being the gradual destruction of the environment. Finding a clean, nearly free source of energy would drastically alter the dynamics of the world system--politically, socially and economically.
Where We Are Now: Anyone who's been to a gas station or paid an electric bill knows that energy isn't free. Additionally, the current debate over when and how to transition away from a carbon-based energy economy has highlighted just how finite and expensive most current energy solutions are.
Even worse, the US Department of Energy predicts a 34 percent increase in the cost of energy by 2020, leaving electricity costing an average of 12.2 cents per kilowatt hour.
However, many experts claim that those numbers don't accurately incorporate the true life cycle cost of coal. Gill also believes that a 20 percent increase in both solar and wind energy could meet the world's energy demand for the next 20 years, two forms of energy that are notoriously cheap once the initial investment costs are overcome.
What Needs To Happen: Although the start up costs are high, solar thermal and offshore wind power drastically reduce the long term cost of energy by using a fuel that, unlike coal, natural gas and nuclear, costs exactly nothing.
To really get massive amounts of energy for next to no money, (and for a similarly Apollo-like public attention garnering)
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