No, it isn't waning. There are struggles, but that doesn't mean its waning. We're having massive progress in medicine, space, cosmology, environment, biology, food, transportation. Hell, the only thing that's waning is public perception of science and that seems to be a deliberate political attack.
I think it's obviously waning if you look at any field that deals with physical world: a car from 1940 looks totally different than one from 1980's, but the one from 2020 and 1980 looks almost the same. Space rockets are same as they were in 80's, where are nuclear engines, fusion propultion, etc? Its the same for airplanes, appliances, and everything execept computers. https://twitter.com/Snowden/status/145134227466…
Airplanes? There is a really good Nova episode on the electric race - we're nearing an electric age with airplanes even in commercial aviation - In the next 5-10 years we'll probably have the short hops covered by quiet electric planes - that innovation isn't necessarily paced by science, but by safety, engineering and certification - things we don't want to shortcut since humans are involved in these systems.
Hell.. we've been dabbling with autonomous cars too and driver assist and lane assist... I can go on and on