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If itâ(TM)s your machine, you can unlock it. This has nothing to do with right to repair, unless you were hoping to buy cheap parts from stolen equipment.

New York City successfully disposed of large numbers of old subway cars by sinking them off shore to create reefs that became habitats for fish. Since many turbines are located in the agricultural mid-west, how about an architectural design contest for using discarded blades as structural elements to build barns and other farm structures? And how many tons of coal ash are generated per exawatt-hour of electricity generated vs tons of discarded turbine blades for the same amount of energy?

Fuel is a small part of the cost of a launch. The maximum payload is only reduced if you want the cost saving of reusability. And one can reserve recycled boosters near the end of their useful life for higher payload missions.

Installing Trolleybus wiring isn't particularly disruptive. The wiring on our local trolleybus (MBTA 73) was removed a few years ago for a major road rebuild and later replaced without much fuss. Also battery operated busses have to be taken out of service periodically and parked somewhere for recharging and they have to carry very heavy battery packs, which increases their energy consumption. You are right, trolleybuses are less flexible, but that lack of flexibility can be an advantage in encouraging transit-oriented development.

The study is meaningless. Any advantage of Mercury being closer to Earth several time a year is completely overwhelmed by how deep Mercury is in the Sun's gravity well. In fact spacecraft that have gone to Mercury have had to perform one or more flybys of Venus to lower their potential energy. It takes a long time and much clever astrogation to get to Mercury with the rockets we have.

Clarke predicted stuff long before 1977. He was the first to suggest using artificial satellites in geostationary orbit as communication relays, way back in 1945.

They do need to know the local gravity to measure mass. There are absolute gravimeters that measure the local value of g by dropping an object in a vacuum chamber and measuring its acceleration to very high accuracy using a laser interferometer and an atomic clock. This does not depend on the mass of the test object by General Relatively. See the Wikipedia article on Gravimeter.

From the NASA Psyche web site: "The Psyche mission will test a sophisticated new laser communication technology that encodes data in photons (rather than radio waves) to communicate between a probe in deep space and Earth." Maybe some of the engineers laid off from the Dawn team could be employed as technical proof readers for NASA PR.

Nuclear power's higher costs may indeed make it uncompetitive with power from fossil fuel (and some of those higher cost are due to endless litigation by opposing environmentalists, at least in the U.S.). But if we have very little time to sharply cut CO2 emissions, ten years according to the IPCC, then we need to at least keep running the nuclear power plants we already have, even if the cost is higher. There is no way we can develop and bring on line enough renewable power to eliminate fossil fuel use in that time frame, and as long as we depend on some fossil fuel, shutting any nuclear plant results in a lot more CO2 emissions. Why aren't environmentalists demanding a moratorium on closing nuclear plants?

Amazon doesn't owe Wikipedia contributors anything. Contributions to Wikipedia are licensed under the Creative Commons Attribution-ShareAlike 3.0 licensed, under which "You are free: to Share—to copy, distribute and transmit the work, and to Remix—to adapt the work, for any purpose, even commercially." You still have to attribute the work and license your modifications under similar terms. (https://en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_Attribution-ShareAlike_3.0_Unported_License) Contributors agree to this license when they click "Publish changes." So maybe Amazon needs to do a better job of attribution, and million dollar gifts are always appreciated, but that about it.

OP should have mentioned a security tax too.

Countries that are cutting back on nuclear power, particularly Germany and Japan, have largely escaped criticism. While both countries are making greater use of renewables, keeping nuclear plants running will eliminate CO2 emissions as long as they would otherwise burn some fossil fuels. If the situation is as grave as the report says, it's time for the green left, which has fought nuclear power relentlessly since the 1970s, to admit that maybe this was not such a good idea and push for nuclear in the mix.

If they start including their new AI processors in the laptops and desktops along with their A-series processors, that could be interesting.

Appleâ(TM)s emulations of the 68000 on the PowerPC and, later, the PowerPC on Intel worked quite well. They also had tools for distributing a program with separate binaries for different platforms. No doubt they can dust them off to distribute apps for both ARM and x86 when the time comes. Apple seems to be taking their time to think this through, which is wise.