environmental
40
architect
background
business
businessman
carbon
city
co2
concept
concern
construction
danger
double
effect
emission
employment
energy
engineer
engineering
executive
exposure
factory
gas
global warming
industrial
industry
infrastructure
investment
man
manager
mechanic
modern
occupation
oil
people
person
plant
pollution
power
professional
refinery
service
solution
strategy
success
technician
technology
worker