![Megalopolis](https://www.popsci.com/wp-content/uploads/2019/03/18/LBXXETYXSYUDJOFIK2OQW4DTNI.jpg?quality=85&w=485)
![Megalopolis](https://www.popsci.com/wp-content/uploads/2019/03/18/LBXXETYXSYUDJOFIK2OQW4DTNI.jpg?quality=85&w=485)
In our annual Future of the Environment issue, we take a look at the monumental problems facing our world as we continue into the 21st century, as well as solutions ranging from the audacious to the everyday to, quite literally, save the planet.
This year we turn much of our focus toward a bold blueprint for the city of the future. Check out our interactive tour of a future green megalopolis, the 10 most audacious engineering solutions for saving the planet, as well as the most problematic cities, industries, and projects looming on the horizon.
The Good News
![Megalopolis](https://www.popsci.com/wp-content/uploads/2019/03/18/LGMH4GDWOKM2ZK343JRAGNDBSM.jpg?strip=all&quality=85)
![planet saving ideas](https://www.popsci.com/wp-content/uploads/2019/03/18/VSG42CMU6MK66BWSJWBDPHJ56E.jpg?strip=all&quality=85)
![Biofuel](https://www.popsci.com/wp-content/uploads/2019/03/18/6WCH5JLMUAUL3YOTHECYJA7KVM.jpg?strip=all&quality=85)
![smart power strip](https://www.popsci.com/wp-content/uploads/2019/03/18/RC2VKN75U5SCEOKIZKZLZVDQU4.jpg?strip=all&quality=85)
![gasless motorcycles](https://www.popsci.com/wp-content/uploads/2019/03/18/WMEOUECBONUSBMAVI5I5HEVDOE.jpg?strip=all&quality=85)
![Google Earth Environment](https://www.popsci.com/wp-content/uploads/2019/03/18/HULOV54FFRXGYBG6C3N456A5IQ.jpg?strip=all&quality=85)
And the Bad News
![Dirty City](https://www.popsci.com/wp-content/uploads/2019/03/18/RWFAR756B7YBLVRAXMBGOUPFSE.jpg?strip=all&quality=85)
![airplane in sky with trails](https://www.popsci.com/wp-content/uploads/2019/03/18/3R7Z37SUWXYYML4TCYGPB7SGH4.jpg?strip=all&quality=85)
![construction site](https://www.popsci.com/wp-content/uploads/2019/03/18/54U2T2J5UVEOFN7ISPDMFXY3NQ.jpg?strip=all&quality=85)
![pollution](https://www.popsci.com/wp-content/uploads/2019/03/18/BKO27CG67TI5NFMZK6LEQVE6NM.jpg?strip=all&quality=85)