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Scientific discoveries, space, environment and research news.

779 articles

High-Speed Flight Project Overview
ScienceMarch 5, 2026

High-Speed Flight Project Overview

What We do The High-Speed Flight (HSF) project develops technologies that make high-speed, airbreathing, commercial flight possible from Mach 1 to Mach 5 and above. HSF creates tools, technologies, and knowledge that will help eliminate today’s technical barriers to practical supersonic flight, most

Mechanism of co-transcriptional cap snatching by influenza polymerase
ScienceMarch 4, 2026

Mechanism of co-transcriptional cap snatching by influenza polymerase

Influenza virus mRNAs are stable and competent for nuclear export and translation because they receive a 5′ cap(1) structure in a process called cap snatching1. During cap snatching, the viral RNA-dependent RNA polymerase (FluPol) binds to host RNA polymerase II (Pol II) and the emerging transcript2

DICER cleavage fidelity is governed by 5′-end binding pockets
ScienceMarch 4, 2026

DICER cleavage fidelity is governed by 5′-end binding pockets

RNA interference (RNAi) depends on DICER, an essential enzyme that processes RNA precursors into small regulatory RNAs. DICER cleaves RNA precursors according to the 5′-end counting rule, in which RNA length is measured from the 5′-end1–3. Previous work proposed a single 5′-end binding pocket that d