(708): Plasma, LED or OLED?
Some of the impacts of climate change are conceptually complex, such as weather extremes, storm tracks, and ecosystem shifts. But one impact that's easy to imagine is sea level rise. When the ocean comes up, stuff ends up underwater. So one way to project the future consequences is to simply calculate how many people and buildings are below a given height above the current sea level.
But sea level isn’t the only thing changing—so are the people and buildings. A new study led by the University of Georgia’s Mathew Hauer looks at population trends around the coastal US for a better estimate of how many people would be affected by rising ocean waters by the end of this century.
The researchers took census data from 1940 to 2010 for coastal counties, and they extrapolated the trends through 2100. Then they ran the results through two scenarios of future sea level rise: one in which it rises 0.9 meters by 2100 and one in which it increases fully 1.8 meters. Those numbers correspond to reasonable estimates if greenhouse gas emissions continue to grow unabated and show the upper end of the potential range of sea level rise.
Want another reason to be skeptical about the idea of connected cars? Here's one: when Nissan put together the companion app for
it's Leaf electric vehicle—the app will turn the climate control on or off—it decided not to bother requiring any kind of authentication. When a Leaf owner connects to their car via a smartphone, the only information that Nissan's APIs use to target the car is its VIN—the requests are all anonymous. Those are the findings of Troy Hunt and Scott Helme, who published their findings on Wednesday. Thursday, Nissan took the service offline.
Hunt started poking into NissanConnect after running a workshop in Norway in January. Norway is overflowing with EVs, and one of them belonged to an attendee. "What the workshop attendee ultimately discovered was that not only could he connect to his LEAF over the internet and control features independently of how Nissan had designed the app, he could control other people’s LEAFs." Upon discovering that his friend Helme also owned a Leaf, the pair began to investigate just how insecure NissanConnect was.
In a lengthy post describing the details of the security flaw, Hunt also lays out a timeline as well as the ethical justification for doing so. He first contacted Nissan to alert it to the problem on January 23rd, describing the company as "receptive" and their behavior as "exemplary" during the process. But it didn't move with sufficient speed for Hunt, as he received an e-mail from a Canadian Leaf owner last week about the
issue last week. He let Nissan know he was planning on going public, doing so on Wednesday.