| GROUNDCREW | 2 team expanded to restrict heat and carbon (6,4) |
| BLACK | Wine merchant's son noted for his work on latent heat and carbon dioxide or "fixed air" (5) |
| NONFICTION | Where to find Practical Railway Engineering, with info on tin and carbon components (3-7) |
| ATMOSPHERE | Earth's gravity-bound life-supporting blanket of gases comprising nitrogen, oxygen, argon and carbon dioxide (10) |
| HOUSEGASES | Radon and carbon monoxide |
| ALJAZEERA | Qatar-based broadcaster that expanded to America in 2013: 2 wds. |
| HALFTIME | 12-minute period expanded to 30 minutes for the Super Bowl |
| ENTREE | Centre expanded to accommodate course (6) |
| ARGON | Gas from uncontained fart expanded to the max? (5) |
| ITALY | Host of the 1980 Euro, when the tournament expanded to eight teams |
| NHL | It first expanded to the US in 1924 |
| HARIBO | *Gummy candy company that expanded to the U.S. in 1982 |
| ECONOMICS | In 1969, the Nobel Prize categories were expanded to include what? (9) |
| CENTRESPREAD | Recent change expanded to heart of paper |
| GREENPEPPER | One of the two team names on Ready Steady Cook prior to 2007 (5,6) |
| BURY | League Two team, sturdy without intervention of league (4) |
| CALE | Port -..., Football League Two team based in Burslem, Stoke-on-Trent (4) |
| TUG | ___ of War (two team game with a rope) (3) |
| AWARD | Duke of Edinburgh's -; youth organisation set up by Prince Philip in 1956 that has since expanded to some 140 countries (5) |
| BRIC | Economic acronym coined in 2001 that was later expanded to include an "S" for South Africa |
