Questions with the keyword 'time travel'

• before Stephen hawking died he wrote down that he believes time travel is possible what are your thoughts on that by 542smap44 to Sheila, Piyush, Natalia, Gary, Dimitar Comments: (No comments so far )
• If you actually traveled back in time and stepped on an insect would that really change the world right now by 934smap48 to Gary Comments: (No comments so far )