Lifeboat Foundation

What’s the scientific reason behind Earth’s sky appearing blue to the human eye?

On the banks of the Solo River in Java, Indonesia, 19th-century physician Eugene Dubois uncovered an astounding fossil find: the bones of what appeared to be an ancient human, surrounded by animal remains and shells. Excavated in the 1890s, the site gained fame as the home of “Java Man,” better known today as Homo erectus.

Dated to between a million and 700,000 years old, the bones immediately provoked controversy, because Dubois claimed they showed evidence of a transitional species between apes and humans. It turns out he was right— Homo erectus fossils have since been found in Africa and elsewhere in Asia, and it is possible the species is a direct ancestor of our own. But it’s the palm-sized shells found alongside the Java remains that are raising big questions today. An examination of the shells published in Nature suggests that Homo erectus may have used the shells for tools and decorated some of them with geometric engravings. At around half a million years old, the shells represent the earliest evidence of such decorative marks and also the first known use of shells to make tools.

Dubois collected 11 species of freshwater shells at the site, called Trinil. Most of them belong to the sub-species Pseudodon vondembuschianus trinilensis, a now extinct freshwater mussel he described in 1908. Initially scientists thought the mollusks had naturally clustered at the site, perhaps driven by water currents. Even without a connection to the human fossil, the cache provided a nice census of ancient freshwater shell life, coming from at least 166 Pseudodon individuals.

The argumentative theory of reasoning suggests that the main function of reasoning is to exchange arguments with others. This theory explains key properties of reasoning. When reasoners produce arguments, they are biased and lazy, as can be expected if reasoning is a mechanism that aims at convincing others in interactive contexts. By contrast, reasoners are more objective and demanding when they evaluate arguments provided by others. This fundamental asymmetry between production and evaluation explains the effects of reasoning in different contexts: the more debate and conflict between opinions there is, the more argument evaluation prevails over argument production, resulting in better outcomes.

The ancient Egyptian pyramids have stood for thousands of years and are among the world’s most enduring monuments. But what did the pyramids look like when they were first built?

Personal visual development based on the novel “3001: The Final Odyssey”, written by Arthur C. Clarke.
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#Film #3001 #GonzaloGolpe

Neal Stephenson’s “Fall; or, Dodge in Hell” (2019) is a festival of ideas centered on mind uploading and simulated realities.

After the three masterpieces “Snow Crash” (1992), “The Diamond Age” (1995), and “Cryptonomicon” (1999), this is the novel of Stephenson that I have enjoyed more.

Long story short, tech entrepreneur Richard “Dodge” Forthrast, previously featured in “Reamde” (2011), becomes the first human upload. Alone and initially selfless in his mindspace, which sits on a shapeless and chaotic bedrock of simulated reality, Dodge gradually recreates a “Bitworld” to live in.

Facebook parent company Meta Platforms Inc. is launching a subscription service called Meta Verified that will include a handful of additional perks and features, including account verification badges for those who pay.

The new subscription will cost $11.99 per month — $14.99 if purchased through the iOS app — and is primarily targeted toward content creators. In addition to a verification badge, the subscription includes “proactive account protection, access to account support, and increased visibility and reach,” a Meta spokesperson said in an email.

Chief Executive Officer Mark Zuckerberg announced the new product via his Instagram Channel, a service that was unveiled in the past week. The option will be available on both Facebook and Instagram, but they’ll be separate subscriptions.

Dropbox is a free service that lets you bring your photos, docs, and videos anywhere and share them easily. Never email yourself a file again!

Documents related to Tesla’s Hardware 4 radar have now been made public by the Federal Communications Commission (FCC). Numerous photos of the new radar unit’s exterior and interior have also been released. Tesla describes its new radar as “a non-pulsed Automotive Radar which operates in the 76–77 GHz spectrum and supports 3 sensing modes.”

Tesla also noted that the new radar unit measures approximately 196 mm (Length) x 82 cm (Width) x 40 mm (Height).

Following are some exterior photos of Tesla’s new radar unit.