Best Free Science Courses & MOOCs

Coursera

University of Alberta

Paleontology: Ancient Marine Reptiles (Coursera)

Science

Dive into the prehistoric past and uncover the secrets of ancient marine reptiles with our Paleontology: Ancient Marine Reptiles course. This engaging four-lesson program offers an in-depth look at how air-breathing terrestrial animals adapted to life in the water, leading to the evolution of diverse species such as ichthyosaurs, plesiosaurs, and mosasaurs. Whether you're a student, educator, or lifelong learner, this course will provide you with a comprehensive understanding of these remarkable creatures.

Sep 2nd 2026

4 Weeks

Evolution Marine Biology Animals

Coursera

University of Alberta

Bugs 101: Insect-Human Interactions (Coursera)

Health & Society Science

Dive into the intriguing realm of arthropods with 'Bugs 101: Insect-Human Interactions' – a comprehensive online course that unravels the significant roles insects play in our lives. From pollination to pest control and disease transmission, explore how these tiny creatures have a big impact on human society.

Sep 1st 2026

13-24 Weeks

Science Biology Ecology

FutureLearn

The Open University

Forensic Psychology: Witness Investigation (FutureLearn)

Health & Society Science

Dive deep into the world of Forensic Psychology with our comprehensive 8-week course, designed to equip you with the skills needed to critically assess eyewitness testimonies in criminal investigations. This course will guide you through the complexities of human memory and perception, enabling you to understand how these factors can impact justice.

Self Paced

5-12 Weeks

Psychology Forensic Science Forensics

EdX

HarvardX,Harvard University

Super-Earths And Life (edX)

Sci: Biology & Life Sciences Sci: Physics

Dive into 'Super-Earths And Life', an edX course that unravels the secrets of Earth's life-sustaining conditions and extends this exploration to the vast universe. Learn about super-Earths, their potential habitability, and our quest for extraterrestrial life. This course is perfect for anyone fascinated by astrobiology, planetary science, or the search for life beyond our solar system.

Self Paced

Self-Paced

Biology Astronomy Universe

Climate Change Science and Negotiations (edX)

EdX

SDGAcademyX,SDG Academy

Climate Change Science and Negotiations (edX)

Sci: Energy & Earth Sciences Sci: Environment

Dive into Climate Change Science and Negotiations, an online course designed for those eager to understand the scientific basis of climate change and the intricacies involved in international negotiations. Learn how to effectively mitigate greenhouse gas emissions and contribute to global efforts to stay within a 2°C temperature rise limit. This course equips you with actionable knowledge on decarbonizing energy systems and adapting to climate impacts, applicable across various national contexts.

Self Paced

Self-Paced

Business Earth Sustainability

Quantum Mechanics for Scientists and Engineers 2 (edX)

EdX

StanfordOnline

Quantum Mechanics for Scientists and Engineers 2 (edX)

Engineering Sci: Physics

Dive into the intricate world of Quantum Mechanics with our advanced course tailored for scientists and engineers. Learn about essential topics such as spin, identical particles, quantum mechanics of light, and the basics of quantum information. Gain a deeper understanding of this fundamental science and its applications in modern technology.

Self Paced

Self-Paced

Science Mechanics Quantum

FutureLearn

Weizmann Institute of Science

Maths Puzzles: Cryptarithms, Symbologies and Secret Codes (FutureLearn)

Sci: Mathematics Science

Dive into the world of encrypted maths puzzles where numbers are replaced by letters or symbols. This free online course will guide you through the history and techniques of solving cryptarithms, symbologies, and mathematical operator puzzles. Perfect for enthusiasts looking to sharpen their problem-solving abilities.

Self Paced

3 Weeks

Math Puzzle Code

EdX

Delft University of Technology,DelftX

Understanding Nuclear Energy (edX)

Engineering Sci: Physics

Dive into the world of nuclear energy with our expert-led course. Learn about the science behind nuclear power, its role in reducing CO2 emissions, safety protocols, waste management, and advancements towards cleaner and more sustainable nuclear energy solutions.

Self Paced

Self-Paced

Physics Energy Radiation

FutureLearn

University of Leeds

Discovering Science: Science Writing (FutureLearn)

Engineering Science

Dive into 'Discovering Science: Science Writing' and transform your understanding of how scientific discoveries are communicated. This course explores the diverse world of science writing, equipping you with the skills needed to convey complex ideas clearly and engagingly. Whether you're a budding journalist or a researcher looking to share your work effectively, this course is designed for you.

Self Paced

2 Weeks

Science Writing Writing Skills