- Aarhus University
- absolute zero
- Academy of Medical Sciences
- accuracy
- acetylcholine
- acid
- ACS Applied Materials & Interfaces
- ACS Environmental Science & Technology Letters
- ACS Food Science & Technology
- ACS Nano
- ACS Sensors
- ADHD
- Advanced Photonics
- alloy
- ALMA
- Alzheimer’s
- American Journal of Clinical Nutrition
- American Journal of Physics
- amino acids
- anthrax
- Applied Physics Letters
- artificial intelligence
- Astrophysical Journal
- Astrophysical Journal Letters
- atom
- Australian National University
- autism spectrum disorder
- Axion