this is nbc nightly news with lester holt. good evening there is significant movement to report tonight in the effort to bring home americans brittney griner and paul whelan, both separately imprisoned in russia. late today, secretary of state antony blinken acknowledging there was a substantial proposal on the table to facilitate their release. griner, the wnba star detained since february, who has pleaded guilty to illegally possessing vape cartridges with cannabis oil whelan, a marine corps veteran, serving a 16-year sentence after being convicted of spying in 2020. both, the u.s. says, are wrongfully imprisoned blinken says the next step, a call with his russian counterpar sergey lavrov. believed to be on the table, a prisoner swap that could prove to be a bitter pill for the biden administration which has been under fire in its efforts to gain freedom for the americans. all this unfolding as griner told her story today inside a russian courtroom. andrea mitchell now
building opening this summer just how high can these wood buildings go this one is 284 feet, 25 stories high. and when it is finished, it will be the tallest building of its kind in the world. here 50% of the wood will be exposed. people respond to natural elements in their home. we know they do right? people feel better they perform better. reporter: better for people and better for the environment says architect michael green. among mass timber s original evangelists he designed this mass timber building in spokane, washington. and is working on a timber project for google steel and concrete are incredible materials that built the skylines of every city on earth, but they also have a really high carbon footprint. building these wood buildings basically allows us to capture carbon in the building. reporter: reducing the carbon emissions when the timber is sustainably sourced even if it is imported from austria like the wood for the ascent.
For wood projects, BIM is important because it requires the involvement of manufacturers, consultants, designers and even the owners of the future building.
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