Image copyright BJORGOLFUR HAVAROSSON Image caption Technology in these salmon cages monitors fish behaviour to determine if they are fully fed Fish farming is big business - the industry now produces about 100 million tonnes a year - and with salmon prices soaring, producers are turning to lasers, automation and artificial intelligence to boost production and cut costs. How do you know if farmed salmon have had enough to eat? Well, according to Lingalaks fish farms in Norway, which produce nearly three million salmon each year, the fish make less noise once the feeding frenzy is over. The firm knows this thanks to a new hydro-acoustic system it has installed at one of its farms. The system listens to the salmon sloshing loudly about as they feed in a cluster. When the fish have had enough, they swim off and the noise lessens. Lingalaks chief executive Erlend Haugarvoll hopes this knowledge will save his firm lots of money in reduced feed, as much of it currently gets wasted. ...
he first day of school our professor introduced himself and challenged us to get to know someone we didn’t already know. I stood up to look around when a gentle hand touched my shoulder. I turned around to find a wrinkled, little old lady beaming up at me with a smile that lit up her entire being. She said, “Hi handsome. My name is Rose. I’m eighty-seven years old. Can I give you a hug?” I laughed and enthusiastically responded, “Of course you may!” and she gave me a giant squeeze. “Why are you in college at such a young, innocent age?” I asked. She jokingly replied, “I’m here to meet a rich husband, get married, and have a couple of kids…” “No seriously,” I asked. I was curious what may have motivated her to be taking on this challenge at her age. “I always dreamed of having a college education and now I’m getting one!” she told me. After class we walked to the student union building and shared a chocolate milkshake. We became instant friends. Every day for the next t...
In 1977 Maryann Gray was a 22-year-old college graduate with her whole life ahead of her, when a little boy darted out in front of her car. For years, Maryann didn't talk about Brian, but she thought about him constantly - and his death has had a lasting influence on her life. I was in a terrific mood that day. I was moving from the little college town of Oxford in rural Ohio into a big old rambling house in Cincinnati with a bunch of other people. I was so excited. I'd been in graduate school but I'd decided I was going to leave. I was happy not knowing what was coming next. I was going to get a job, have fun, see where my passions led me. I was at the house - we called it an urban commune - painting the room I was moving into. When I finished I thought I'd drive back to my apartment in Oxford which was all packed up and ready for the move - it was a warm day in June and I thought it would be great to take a swim. The road started out as freeway but quickly be...
Comments
Post a Comment