A NASA-led research team used satellite imagery and artificial intelligence methods to map billions of discrete tree crowns down to a 50-cm scale. The images encompassed a large swath of arid northern Africa, from the Atlantic to the Red Sea. Allometric equations based on previous tree sampling allowed the researchers to convert imagery into estimates of tree wood, foliage, root size, and carbon sequestration.
The new NASA estimation, published in the journal Nature, was surprisingly low. While the typical estimation of a region’s carbon stock might rely on counting small areas and extrapolating results upwards, the NASA demonstrated technique only counts the trees that are actually there, down to the individual tree. Jules Bayala and Meine van Noordwijk published a News & Views article in the same journal commenting on the NASA team’s work.
The initial expectation of counting every scattered tree, in areas that previous models often represented by zero values, was erased by large overestimations in other areas of the earlier assessments. In previous attempts using satellites, cropland, and ground vegetation adversely affected optical images. If radar was used, topography, wetlands, and irrigated areas affected the radar backscatter, predicting higher carbon stocks than the current NASA estimations.
FULL AudioBook | GreatestAudioBooks | Science Fiction / Fantasy — Early victories by the USSR in a global nuclear war cause the United Nations government to retreat to the moon leaving behind troops and fierce autonomous robots called “Claws”, which reproduce and redesign themselves in unmanned subterranean factories. After six bloody years of conflict the Soviets call for an urgent conference and UN Major Joseph Hendricks sets out to meet them. Along the way he will discover what the Claws have been up to, and it isn’t good… — Second Variety was first published in the May 1953 edition of Space Science Fiction Magazine. (Summary by Gregg Margarite)
About the Author, Philip K. Dick: Philip Kindred Dick (December 16, 1928 – March 2, 1982) was an American writer notable for publishing works of science fiction. Dick explored philosophical, social, and political themes in novels with plots dominated by monopolistic corporations, authoritarian governments, alternate universes, and altered states of consciousness. His work reflected his personal interest in metaphysics and theology, and often drew upon his life experiences in addressing the nature of reality, identity, drug abuse, schizophrenia, and transcendental experiences.
Born in Illinois before moving to California, Dick began publishing science fiction stories in the 1950s, initially finding little commercial success. His 1962 alternate history novel The Man in the High Castle earned Dick early acclaim, including a Hugo Award for Best Novel. He followed with science fiction novels such as Do Androids Dream of Electric Sheep? (1968) and Ubik (1969). His 1974 novel Flow My Tears, the Policeman Said won the John W. Campbell Memorial Award for best novel. Following a series of religious experiences in February–March 1974, Dick’s work engaged more explicitly with issues of theology, philosophy, and the nature of reality, as in such novels as A Scanner Darkly (1977) and VALIS (1981). A collection of his non-fiction writing on these themes was published posthumously as The Exegesis of Philip K. Dick (2011). He died in 1982 of a stroke, aged 53.
In addition to 44 published novels, Dick wrote approximately 121 short stories, most of which appeared in science fiction magazines during his lifetime. A variety of popular films based on his works have been produced, including Blade Runner (1982), Total Recall (1990), Minority Report (2002), A Scanner Darkly (2006), Paycheck (2003), Next (2007), and The Adjustment Bureau (2011). In 2005, Time magazine named Ubik one of the hundred greatest English-language novels published since 1923. [6] In 2007, Dick became the first science fiction writer to be included in The Library of America series. (Summary adapted from Wikipedia.org — Attribution: https://en.wikipedia.org/w/index.php?title=Philip_K._Dick&action=history)
An updated look at how we are preparing to search the solar system in SETI to see whether anyone has ever stationed an alien probe in the star system including just what we might look for.
In his 1996 book “The End of Science”, John Horgan argued that scientists were close to answering nearly all of the big questions about our Universe. Was he right?
The theoretical physicist Sabine Hossenfelder doesn’t think so. As she points out, the Standard Model of physics, which describes the behavior of particles and their interactions, is still incomplete as it does not include gravity. What’s more, the measurement problem in quantum mechanics remains unsolved, and understanding this could lead to significant technological advancements.
On Wednesday, OpenAI announced the availability of developer APIs for its popular ChatGPT and Whisper AI models that will let developers integrate them into their apps. An API (application programming interface) is a set of protocols that allows different computer programs to communicate with each other. In this case, app developers can extend their apps’ abilities with OpenAI technology for an ongoing fee based on usage.
OpenAI calls its new ChatGPT API model “gpt-3.5-turbo,” which supersedes its previous “best” LLM API, “text-davinci-003.” It is priced at $0.002 per 1,000 tokens (about 750 words), which OpenAI says is about 10 times cheaper than its existing GPT-3.5 models. “Through a series of system-wide optimizations, we’ve achieved 90% cost reduction for ChatGPT since December,” writes OpenAI on its API announcement page.
“The host star, TOI-5205, is just about four times the size of Jupiter, yet it has somehow managed to form a Jupiter-sized planet, which is quite surprising!” exclaimed Dr. Shubham Kanodia, who is a postdoctoral fellow in the Carnegie Earth & Planets Lab and an expert in red dwarf stars, and lead author of the study. Dr. Shubham recently discussed the discovery in an in-depth blog post, as well. Using food as an analogy, Jupiter orbiting our Sun is equivalent to a pea orbiting a grapefruit, whereas TOI-5205b orbiting its parent star would be equivalent to a pea orbiting a lemon.
The general theory of planetary formation begins with a massive, rotating disk of gas and dust encircling young stars, with gas planets initially being formed from rocky material comprising approximately 10 Earth masses. Over time, this material forms the core of the giant planet, which then accumulates large amounts of gas from the disk to produce the massive gas giants we observe today. As it turns out, the confirmation of TOI-5205b could throw this theory into disarray.
“TOI-5205b’s existence stretches what we know about the disks in which these planets are born,” explained Dr. Kanodia. “In the beginning, if there isn’t enough rocky material in the disk to form the initial core, then one cannot form a giant gas planet. And at the end, if the disk evaporates away before the massive core is formed, then one cannot form a giant gas planet. And yet TOI-5205b formed despite these guardrails. Based on our nominal current understanding of planet formation, TOI-5205b should not exist; it is a ‘forbidden’ planet.”
Summary: The human brain continues to massively outperform AI technology in a range of tasks, a new study reports. Researchers outline their plans for biocomputers and organoid intelligence systems as future improvements for artificial intelligence technology.
Source: Cortical Labs.
The time has come to create a new kind of computer, say researchers from John Hopkins University together with Dr Brett Kagan, chief scientist at Cortical Labs in Melbourne, who recently led development of the DishBrain project, in which human cells in a petri dish learnt to play Pong.
Tesla held Investor Day 2023 this week and announced the construction of a new plant in the Mexican state of Nuevo Leon. The new facility will be Tesla’s largest production facility.
Here’s What We Know
Elon Musk’s company will invest $5 billion to build the Mexican plant and create 5,000–6,000 jobs. Over time, however, the amount of investment and the number of jobs will double.
Ford Motor Co. has filed for a patent on technology that could remotely shut down your radio or air conditioning, lock you out of your vehicle, or prompt it to ceaselessly beep if you miss car payments. Ford said it has no plans to use the technology, contained in just one of the many patents filed by the auto-making giant.
Still, it emerges at a troubling time for car owners. Loan delinquencies have been steadily ticking back up from their pandemic lull. Cox Automotive data showed severely delinquent auto loans in January hitting their highest point since 2006. The use of technology to aid repossessions isn’t new, but the patent application is wide-ranging, even proposing the idea that an autonomous vehicle could drive itself to a “more convenient” location to be collected by a tow truck.
“It really seems like you’re opening up a can of worms that, as a manufacturer, you don’t really need to be doing,” said John Van Alst, a senior attorney with the National Consumer Law Center.
