the homepage for the us department of energy: energy.gov

mdpi is a publisher of peer-reviewed, open access journals since its establishment in 1996.

nsf's mission is to advance the progress of science, a mission accomplished by funding proposals for research and education made by scientists, engineers, and educators from across the country.

access 160+ million publications and connect with 25+ million researchers. join for free and gain visibility by uploading your research.

defense advanced research projects agency

nasa.gov brings you the latest news, images and videos from america's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research.

nist promotes u.s. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life.

science/aaas peer-reviewed journals deliver impactful research, daily news, expert commentary, and career resources.

herox is connecting problem solvers like you to innovative thinking and opportunities. a crowdsourcing innovation platform with a global partner network.

sci-hub website. get free access to academic journals. download research papers for free from sciencedirect, ieee, wiley, springer, nature and others