The world is full of unfathomably huge projects happening right under our noses.
Take the Hong Kong-Zhuhai-Macau Bridge, which will link three major Chinese cities in the country's quest to bring 42 million people together.
Or Norway's plan to build the world's first fully-submerged floating tunnel to cut travel times between fjords in half.
Those efforts and many others illustrate how investing billions of dollars in enormous projects can collectively make the world a better place to live.
Here are some of the biggest projects the world has seen so far.
• The sun will destroy Earth a lot sooner than you might think
• Medicines you shouldn't take on a plane
• A flight attendant has a theory about 'unhealthy' airplane food
Read the original article on Business Insider UK. © 2018. Follow Business Insider UK on Twitter.