The oldest fossilized remains of complex animals appear suddenly in the fossil record, and as if from nowhere, in rocks that ...

Writer and journalist Amitava Kumar reflects on his new book The Social Life of Indian Trains, his writing process, Bihar, migration, nostalgia, grief and why carrying notebooks is essential for every ...

Abstract: This article proposes a method for estimating the number of sources using the time-domain received signal in frequency-modulated continuous-wave radar systems. Conventional approaches ...