Lise Barnéoud's Hidden Guests shows how this fascinating new field brings with it profound implications for medicine, and even what it means to be human, finds Helen Thomson "We are composed not only of human cells and microbes but also fragments of others " My children were conceived using donated eggs, so you would be forgiven for assuming we share no genetic material. Yet science has proved this isn't entirely true. We now know that during pregnancy, fetal cells cross the placenta into the mother, embedding themselves in every organ yet studied. Likewise, maternal cells, and even those that crossed from my mum to me, can make their way into my kids. And things might get even more chimeric - I have older sisters, so their cells, having passed into my mum during their own gestation, might have then found their way into me and, in turn, into my kids.

Sense is a bright-orange box that sits in your electrical breaker box and gives in-depth insight into your home's entire power usage. The whole system is quite clever and--thankfully--free of any monthly charges. But it learns very slowly, and that's likely to frustrate you. Sense ($299 at Amazon) works by electromagnetically listening to the power flowing along the two hot wires that run from your electric meter to your breakers. By measuring the current flow a million times each second, Sense can observe changes in load with precise detail and, based on a machine-learning database, attempt to identify the footprint of different devices from the noise they generate. This means it can tell you exactly how much energy different appliances in your house use, and it does all of this without requiring sensors or smart plugs on each device.

Sense is a bright-orange box that sits in your electrical breaker box and gives in-depth insight into your home's entire power usage. The whole system is quite clever and--thankfully--free of any monthly charges. But it learns very slowly, and that's likely to frustrate you. Sense works by electromagnetically listening to the power flowing along the two hot wires that run from your electric meter to your breakers. By measuring the current flow a million times each second, Sense can observe changes in load with precise detail and, based on a machine-learning database, attempt to identify the footprint of different devices from the noise they generate. This means it can tell you exactly how much energy different appliances in your house use, and it does all of this without requiring sensors or smart plugs on each device.

Predicting the future is an imprecise art. But after years of crying wolf, one thing is becoming clear: automation is set to change the world of work forever. "It's not easy to measure automation precisely, but anecdotal and economic evidence indicate we have every reason to believe it will move faster and faster," says Martin Ford, global thought leader on automation at work and author of Rise of the Robots: Technology and the threat of a jobless future. Ford, who will be speaking at the upcoming Creative Innovation Conference, first became interested in an automated future while running a small software company in the 1990s. Back then, software still came on CD ROMs that were shipped to customers – a job that, while tech based, still required a human touch.