Investors scramble to make sense of a shock Chinese challenge to the dominance of western chipmakers

Even for the rollercoaster world of AI, last week was particularly volatile as investors scrambled to keep up with developments that threatened the dominance of the largest western chipmakers.

It began with a double whammy. On Monday, the Chinese memory chipmaker CXMT floated on the Shanghai stock market, soaring by 466% in value to 3.3tn yuan (£365bn).

New AI models, advanced robots and specialty computer chips are unsettling markets and the US tech industry

Over the past month, a series of advancements in China’s artificial intelligence, chip manufacturing and robotics technologies have rattled financial markets, caused divisions among US tech moguls and left the Trump administration scrambling to respond.

Silicon Valley has long pointed to China’s tech industry as a competitive threat and used its growth as rationale for why US firms should not face regulatory oversight that could slow them down. In recent weeks, however, China’s progress has pushed US tech CEOs past vague warnings and into open disagreement over how to address Chinese-made products upending their industry.

Companies must ensure people know when they are interacting with artificially generated images, audio and text designed to look real

From apparently conspiring to steal elections to abusing staff or performing embarrassing dance moves, the last few years have seen plenty of fake content made about politicians intended to malign its targets and mislead the public.

Now EU rules aim to stem the flood of this deceptive content: starting from Sunday, artificially generated images, audio and text designed to look authentic must be labelled.

Pre-programmed flights gather data at different altitudes then return to bases to recharge and download

Weather happens in the boundary layer, the atmosphere from ground level to a few thousand metres, but this can be difficult to study in detail: weather stations are too low, and aircraft are expensive. Instrumented weather balloons are the traditional solution, and thousands are released every day. But these are at the mercy of the wind and use irreplaceable helium.

Drones offer an alternative and the US company Meteomatics has taken the idea further with Meteobase, a base station on the ground with a drone that can be launched and recovered automatically. It carries out a pre-programmed flight, gathering data at different altitudes, then returns to recharge and download data which the Meteobase sends to researchers.