Though I specialized in Germanic languages, I need to present (in a very simple way using a very simple language) some scientific topics in English to Italian 18-year-old-students (studying applied sciences) whose English is very poor. I'm seeking internet sites where everything is explained clearly and can be listened to at the same time.

I've been given a booklet by the school containing short and abdridged newspaper articles on the various topics but there are no post-reading activities and the listening ones are missing.
The topics are as follows: DNA (a chemical contained in chromosomes), biology's big bang (Briefing RNA),HIV/AIDS:basic instructions), Chemical research and medicine, Astrophics 1 (birth of a star, death of a star, white dwarfs, neutron stars, black holes) Astrophics 2 (Olber's Paradox, Gravity won't allow a static universe, cosmological red shift, hubble's law, comsological principle, Omega factor, the Big Bang theory).

Please, give me a hand!

i don't know if this site has all of them but it might have some. try googling

khan university . it has videos with the man explaining things like chemistry, algebra, and all kinds of other things on a "blackboard"

http://www.khanacademy.org/

Scroll down to find all the subject areas and individual topics. It's an amazing website.

Of course, I'd be happy to help! Here are some internet sites where you can find clear explanations of scientific topics in English and often have audio components as well:

1. Khan Academy (https://www.khanacademy.org/): Khan Academy offers a wide range of topics, including biology, chemistry, physics, and astronomy. The videos on their website provide clear explanations, and many have subtitles that can aid understanding.

2. Crash Course (https://www.youtube.com/user/crashcourse): Crash Course is a YouTube channel that covers various subjects, including biology, chemistry, and astronomy. The videos are entertaining and designed to be easily understandable.

3. TED-Ed (https://ed.ted.com/): TED-Ed offers educational videos on a wide range of topics, including science. Their videos often include interactive quizzes and additional resources to deepen understanding.

4. SciShow (https://www.youtube.com/user/scishow): SciShow is another YouTube channel that covers various scientific topics. Their videos are fun and engaging, providing clear explanations on subjects like biology and chemistry.

5. National Geographic (https://www.nationalgeographic.com/): National Geographic's website offers informative articles and videos on a wide range of scientific topics, including biology, astronomy, and medicine. The articles are usually written in a simple language that can be easily understood.

Remember, for each topic, it might be helpful to search specifically for keywords related to the subtopics you mentioned, like "DNA explained" or "birth of a star explained." This will help you find more targeted resources.

Additionally, you can consider using online language learning platforms like Duolingo or Babbel to improve your students' English skills. These platforms provide interactive lessons and exercises tailored to language learners, which can help them understand the scientific topics more effectively.

Lastly, you can create your own post-reading and listening activities based on the short articles in the booklet you received. This way, you can reinforce the understanding of the topics and tailor the activities to your students' needs and language level.

I hope these resources and suggestions will be helpful to you and your students. Good luck with your presentation!