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The aircraft could be used to transfer passengers between home and airports, Virgin believes. It would be able, for example, to make the 56-mile journey from Cambridge to Heathrow in 22 minutes, compared with a 90-minute drive.

The announcement represents another step in the race to making mass electric flight and air taxis a reality. Some analysts have predicted the sector could be worth £150bn by 2040 but significant hurdles remain, including regulation and safety certification. The VA-X4 has yet to take its first test flight. Dómhnal Slattery, the chief executive of Avolon, said its order would “accelerate the inevitable commercial rollout of zero-emissions aircraft. Before the end of this decade, we expect zero-emission urban air mobility, enabled by eVTOLs, to play an increasingly important role in the global commercial aviation market.”

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TAMPA, Fla. — Seraphim Capital plans to trade stakes it has amassed in space technology startups on the public market through an investment trust.

The Seraphim Space Investment Trust will eventually comprise bets in 19 international startups, including satellite data specialist Spire Global, quantum encryption firm Arqit and space-based cellular network operator AST Space Mobile.

Those three recently got valuations of more than $1 billion in mergers with special purpose acquisition companies (SPACs), investment vehicles that offer another route to public markets.

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Floorplanning is the process by which an integrated circuit is designed using a top-down view. Rather like the architectural plan of a home, garden, and walkways, each of the major functional blocks is placed in a schematic representation that provides a guide for where everything needs to be. This layout can include transistors, capacitors, resistors, wires and other components, all packed into extremely tiny spaces.

Determining the optimal configuration for processing speed and power efficiency is a detailed and lengthy task, involving many iterations. It can often take weeks or even months for expert human engineers. Attempts to fully automate the process have been unsuccessful.

However, researchers from Google have this week reported a new machine-learning approach to floorplanning. Not only does it reduce the design workload to a matter of hours, it also results in chips with superior designs.

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Cells contain machinery that duplicates DNA into a new set that goes into a newly formed cell. That same class of machines, called polymerases, also build RNA messages, which are like notes copied from the central DNA repository of recipes, so they can be read more efficiently into proteins. But polymerases were thought to only work in one direction DNA into DNA or RNA. This prevents RNA messages from being rewritten back into the master recipe book of genomic DNA. Now, Thomas Jefferson University researchers provide the first evidence that RNA segments can be written back into DNA, which potentially challenges the central dogma in biology and could have wide implications affecting many fields of biology.

“This work opens the door to many other studies that will help us understand the significance of having a mechanism for converting RNA messages into DNA in our own cells,” says Richard Pomerantz, Ph.D., associate professor of biochemistry and molecular biology at Thomas Jefferson University. “The reality that a human can do this with high efficiency, raises many questions.” For example, this finding suggests that RNA messages can be used as templates for repairing or re-writing genomic DNA.

The work was published June 11th in the journal Science Advances.

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A new study has revealed that humans — along with all other mammals and reptiles — have the capability of producing venom. The study, published on Monday (March 29) in the journal Proceedings of the National Academy of Sciences, said humans apparently have a “tool kit” to produce venom.

According to a report in Live Science, humans already produce a key protein used in many venom systems.

It said kallikreins, a kind of protein that digest other proteins, are secreted in saliva and are a key part of many venoms. They are a natural starting point for theoretically venomous humans.

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Using the full system, farmers could reduce costs by 40% and chemical usage by up to 95%.

Small Robot Company (SRC), a British agritech startup for sustainable farming, has developed AI-enabled robots – named Tom, Dick and Harry – that identify and kill individual weeds with electricity. These agricultural robots could reduce the use of harmful chemicals and heavy machinery, paving the way for a new approach to sustainable crop farming.

The startup has been working on automated weed killers since 2017, and this April officially launched Tom, the first commercial robot currently operating on three UK farms. Dick is still in the prototype phase, and Harry is still in development.

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