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The Covid omicron XBB.1.5 variant is rapidly becoming dominant in the U.S. because it is highly immune evasive and appears more effective at binding to cells than related subvariants, scientists say.

XBB.1.5 now represents about 41% of new cases nationwide in the U.S., nearly doubling in prevalence over the past week, according to the data published Friday by the Centers for Disease Control and Prevention. The subvariant more than doubled as a share of cases every week through Dec. 24. In the past week, it nearly doubled from 21.7% prevalence.

Scientists and public health officials have been closely monitoring the XBB subvariant family for months because the strains have many mutations that could render the Covid-19 vaccines, including the omicron boosters, less effective and cause even more breakthrough infections.

A Peninsula biotech startup cofounded by pioneering geneticist George Church — who already is working to engineer the woolly mammoth out of extinction — is trying to raise as much as $5 million in a crowdfunding effort to design healthier, longer-living pets.

AdoraPet Biosciences Inc. of San Mateo plans to apply the genome-engineering CRISPR technology at the egg stage of dogs and cats or insert CRISPR-modified DNA into eggs, to make nonallergenic pets that don’t shed and ultimately live longer, are free of genetic diseases caused by inbreeding and are resistant to cancer and other serious diseases.

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Welcome to our latest video on the future of artificial intelligence! In this episode, we’ll be exploring the question is.

AI a friend or an enemy, and will they be a potential threat to humanity?

On the one hand, AI has the potential to revolutionize many industries and make our lives easier. From self-driving cars to virtual assistants, AI has already made some incredible advancements in recent years.

On the other hand, there are valid concerns about the potential dangers of AI. Some experts have warned that AI could eventually surpass human intelligence and potentially even pose a threat to our very existence.

So what’s the truth? In this video, we’ll take a look at both sides of the argument and try to answer the question: should we fear AI or embrace it? We’ll also be discussing the ethical considerations surrounding AI and what the future may hold for this rapidly evolving technology.

Stay tuned for a thought-provoking discussion on the future of artificial intelligence.