There are loads of brilliant building projects to get stuck into in this issue! You can cut out and construct your own paper bridges and test which is the strongest, then grab some Lego and wool to create a suspension bridge, and you can also learn all about the greatest engineers in the animal kingdom and simulate a prairie dog ventilation system! We’ve got an interview with Mars rover engineer Abbie Hutty, you can find out how bicycle gears work, marvel at 10 Awesomely Amazing bizarre buildings and read about the highly constructive life of world-famous engineer Isambard Kingdom Brunel. What are you waiting for? Hard hats on kids!