内容摘要：Daniel's not ruling out a ceasefire. But he adds: "You can't trust Putin to do anything that's not beneficial to Putin."

Daniel's not ruling out a ceasefire. But he adds: "You can't trust Putin to do anything that's not beneficial to Putin."

However, Mr Barthet at Michelin thinks that a material closer to a high-performance plastic will be more suitable for tyres that need to cover long distances on the Moon.Bridgestone has meanwhile taken a bio-mimicry approach, by making a model of the footpads of camels.

Camels have soft, fatty footpads that disperse their weight on to a wider surface area, keeping their feet from sinking into loose sandy soil.Inspired by that, Bridgestone is using a felt-like material for its tread, while the wheel comprises thin metal spokes that can flex.The flexing divides the lunar module's weight into a larger contact area, so it can drive without getting stuck in the fragments of rock and dust on the Moon's surface.

Michelin and Bridgestone are each part of different consortiums that, along with California's Venturi Astrolab, are presenting their proposed tyre tech to Nasa at the John Glenn Centre this month (May).Nasa is expected to make a decision later this year - it might choose one proposal or adopt elements of several of them.

Meanwhile, Michelin is testing its tyres by driving a sample rover around on a volcano near Clermont, whose powdery terrain resembles the Moon's surface.

Bridgestone is doing the same on western Japan's Tottori Sand Dunes.Almost daily, my phone pings with messages from hackers of all stripes.

The good, the bad, the not-so-sure.I've been reporting on cyber security for more than a decade, so I know that many of them like to talk about their hacks, findings and escapades.

About 99% of these conversations stay firmly locked in my chat logs and don't lead to news stories. But a recent ping was impossible to ignore."Hey. This is Joe Tidy from the BBC reporting on this Co-op news, correct?" the hackers messaged me on Telegram.