James' World 2

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What does a modern combine harvester and a Diplodocus have in common? One answer, it seems, may be their big footprints on the soil. A new study led by researchers from Sweden and Switzerland has found that the weight of farming machinery today is approaching that of the largest animals to have ever roamed the Earth – the sauropods.

Depicted as the giant, friendly “veggiesaurus” in the movie Jurassic Park, sauropods were the biggest of the dinosaurs. The heaviest were thought to weigh in at around 60 tonnes – similar to the weight of a fully laden combine harvester. Tractors and other machinery used on farms have grown enormously heavier over the past 60 years as intensive, large-scale agriculture has become widespread. A combine harvester is almost ten times heavier today than it was in the 1960s.

The weight of animals or machines matters because soils can only withstand so much pressure before they become chronically compacted. They may not look it, but soils are ecosystems containing fragile structures – pores and pathways which allow air to circulate and water to reach plant roots and other organisms. Tyres, animal hooves, and human feet all apply pressure, squashing the pores, not just at the surface but deeper down too.

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Braslavets Denys/Shutterstock

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In the early months of the coronavirus lockdowns, my wife shared with me a daily dose of cat videos. By shared, of course, I mean she flipped the screen of her phone and thrust it at me across the table: “Look!” And for the next 10 minutes, we’d scroll—cat taking a bubble bath, cat robbing a fishmonger, cat playing the piano to an audience of two cats and a dog. One afternoon, as I came in the door, covered in snow, she greeted me with “Cat Lawyer”—a video of a Texas lawyer stuck on kitten filter during a court case on Zoom. The snow melted off my hat, all over the mobile screen, but we kept watching.

“Cat Lawyer” went viral in February 2021, a year into the pandemic, when we had tried for several months to get an actual cat to live with us in northern Iceland. Animal shelters were empty, with hundreds of disappointed people yearning for the comfort and joy of a feline friend. Icelandic cat breeders did not answer their phones, and the local veterinary authority cracked down on illegal kitten dealers for the first time. Cats were having the best year since the invention of the internet—it seemed.

Today, as Icelanders embrace freedom again, Icelandic cats are fighting for theirs.

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NASA’s Voyager 1 probe, the farthest human-made object from Earth, seems to be a little confused about what is going on in its distant location in interstellar space. 

The long-lived probe and its twin, Voyager 2, were launched on their epic space journeys in 1977 and are the first spacecraft ever to reach interstellar space, which is the great cosmic expanse beyond the dominant influence of the Sun.

But lately, Voyager 1 has been sending “invalid data” about its journey into this unexplored frontier, according to a NASA statement released on Wednesday. The glitch is affecting the probe’s attitude articulation and control system (AACS), which orients the spacecraft on its travels, and ensures that its communication antenna faces Earth. While the AACS system is correctly pointed toward Earth, it has started babbling “random” telemetry data and other gibberish about the probe being in positions that are not possible, NASA said.

“A mystery like this is sort of par for the course at this stage of the Voyager mission,” said Suzanne Dodd, project manager for Voyager 1 and 2 at NASA’s Jet Propulsion Laboratory, in the statement. “The spacecraft are both almost 45 years old, which is far beyond what the mission planners anticipated.” 

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Illustration of Voyager 1. Image: NASA/JPL-Caltech

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