Delta:
•Introducing fully horizontal "lie-flat seats'' in BusinessElite.
•Hired chefs as consultants to improve on-board meals.
•Brought in sommelier Andrea Robinson to select wines for first class and BusinessElite.
•Started serving a line of "signature'' cocktails on long-haul flights, from the "Mile High Mojito" to the "Mango Kiss."
Northwest:
•Offers vegetarian meal options in first class.
•New regional jets have leather seats and adjustable headrests.
•Replaced DC-10s with Airbus planes sporting modern entertainment systems.
Just as Lawrence Kazmerski, a top official at the National Renewable Energy Laboratory, was about to give the keynote address at the University of Minnesota's annual E3 conference at the RiverCentre in St. Paul, the lights went out, bathing the audience in darkness and a deep sense of irony.
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