Christchurch trams return after a nearly three-year absence. Picture: www.christchurchnz.com Source: Supplied CHRISTCHURCH'S trams are back in business, including its oldest, No 11, which has been transported to the city's heart from storage at Ferrymead Heritage Park. The 2.6km loop of track was damaged and the trams taken out of service after the February 2011 earthquakes. Repairs to the tracks and overhead cables and wiring were completed earlier this month and trams have been fitted with video screens and content showing Christchurch before the quakes as well as topical commentary. The trams will return in three stages, starting with a linear return route from the northern end of New Regent Street. christchurchnz.com Susan Kurosawa Style CHRISTIE'S has raised a world record $US44 million ($47.13m) from luxury watches in a two-day sale last week, the auction house says. The star earner of the collection was a pink gold Patek Philippe watch (pictured) that fetched $US2.1m. Another gold watch by the Swiss watchmaker, dating from 1947, sold for $US1.57m. The watches went under the hammer in three sessions and were all sold to anonymous buyers. The auction house reveals it sold 50 Rolex Daytona "Lesson One" watches in the first session for a total of $US13.24m, including one for just over $US1m. In a jewellery auction this week, Christie's will put up for sale the world's largest known orange diamond, valued from $US17m-$US20m. Fitness REASON to exercise No 4: Dealing with the daily grind will be a whole lot easier if you build your endurance and muscle strength through regular physical activity. The Mayo Clinic in the US reports that exercise delivers oxygen and nutrients to your tissues and helps your cardiovascular system work more efficiently. And when your heart and lungs work more efficiently, you have more energy to go about your day-to-day activities. Gadgets FORMER Tasmanian premier David Bartlett and Michael Harcourt, a one-time premier of British Columbia, Canada, have joined forces to build an online platform for consultations between government and communities. PlaceSpeak connects citizens, government, agencies and companies. It uses a process that lets individuals confidentially verify their location. Bartlett already has enjoyed success with his enterprise document repository, AsdeqDocs. Danger PARENTS are again being warned to keep small batteries out of reach of infants. A nine-month-old boy on Queensland's Sunshine Coast swallowed a button battery recently - months after a four-year-old girl died in a similar incident in the same area - and ended up being airlifted to a Brisbane hospital. "Button batteries can lodge in the oesophagus of infants and cause serious injury or even death if they go undetected," says Careflight's chief medical officer Allan MacKillop. Each week four kids end up in emergency departments after swallowing the batteries. Food books SO, food books are the obvious Christmas gift. But what do you give somebody who already has loads of cheffy books? One answer would be a subscription to Eat Your Books, an online catalogue and food lovers' virtual community combined. Loading your books on to the virtual bookshelf is easy and once it is done you have digital access to just about every recipe you own. EYB allows you to search on author or ingredient. And it has catalogued just about every food book ever published. It's one of those "once you've tried it" things. eatyourbooks.com. It's $US25 well spent. John Lethlean