The cave hand stencils:

https://news.artnet.com/art-world/children-worlds-first-artists-new-study-finds-quarter-prehistoric-spanish-hand-paintings-kids-13-2084734

Virtual Reality Device:

https://www.odditycentral.com/technology/this-device-lets-you-feel-virtual-reality-pain-in-real-life.html

Surviving for 27 days in the Amazon rainforest :

https://www.odditycentral.com/news/young-brothers-survive-almost-a-month-alone-in-the-amazon-jungle.html

UFO or something else:

https://www.dailymail.co.uk/news/article-10701681/Weird-cloud-Alaska-ignites-talks-UFO-crash-weapons-test.html

Cool optical illusion:

https://www.heart.co.uk/lifestyle/quizzes-puzzles/couple-hugging-optical-illusion-legs/

https://wonderfulengineering.com/betz-sphere-makes-place-inexplicable-wonders/

Sceptic take on the Betz Sphere:

https://skeptoid.com/episodes/4334

Gobekli Tepe

https://www.ranker.com/list/facts-about-gobekli-tepe-turkish-archaeological-site/stephanroget

Oumuamua:

https://solarsystem.nasa.gov/asteroids-comets-and-meteors/comets/oumuamua/in-depth/

https://www.oldest.org/ancient/most-infamous-ancient-curses-in-history/

Great article!

https://www.ancient-origins.net/news-myths-legends-africa/ancient-art-magic-curses-and-supernatural-spells-002253

https://www.catholic.org/news/hf/faith/story.php?id=72649

https://www.scoopwhoop.com/real-life-demonic-possessions/

https://www.cnn.com/2017/08/04/health/exorcism-doctor/index.html

I could not find the video regarding the psychic medium I speak about in the episode. However, there are plenty of similar mediums out there that you can investigate. 

Skyquakes:

https://www.thoughtco.com/science-of-skyquakes-4158737

Possible causes:

https://www.seismosoc.org/Publications/SRL/SRL_82/srl_82-5_op/hill_op.html

BBC article on mysterious bangs:

https://www.bbc.com/future/article/20141202-mystery-booms-whats-the-cause

VERY extensive list of mystery booms. Great resource!

https://strangesounds.org/mystery-booms-and-rumblings

Example of booms with flashes of light:

https://www.youtube.com/watch?v=JovJlFJbsPg

Great day time example. Note how the sound is explained. This isn't thunder!

https://www.youtube.com/watch?v=sxJR2X5shQ0

https://sites.utdallas.edu/fas/#:~:text=Foreign%20accent%20syndrome%20(FAS)%20is,stroke%20or%20traumatic%20brain%20injury.

Sarah Colwill and others:

https://www.youtube.com/watch?v=ZCYGI0LvQws

Studies that suggest FAS may be more of a psychological issue:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4846654/

https://blogs.scientificamerican.com/bering-in-mind/one-last-goodbye-the-strange-case-of-terminal-lucidity/

Advice and guidelines 

https://www.crossroadshospice.com/hospice-palliative-care-blog/2019/july/16/end-of-life-rallying-what-is-terminal-

lucidity/

Great article with some amazing cases:

https://www.theguardian.com/society/2021/feb/23/the-clouds-cleared-what-terminal-lucidity-teaches-us-about-life-death-and-dementia

https://www.psychologytoday.com/us/articles/200007/is-there-sixth-sense

https://www.livescience.com/42635-esp-sixth-sense-just-vision.html