If atheists are so positive that there is no God, where is their proof that He does not exist?

Read also:

• Why did Obito, a supposed "bad person," do good things for Kakashi?
• Final Fantasy Tactics is at long-last getting a remaster for Xbox and PC, and its got a release date - Windows Central
• Why do atheists always argue about the existence of suffering in the world as meaning God doesn't exist when it doesn't prove anything?
• In what ways is modern day Russia similar to the USSR? How does it differ from the USSR in terms of culture and politics?
• New Study Finds 1 Promising Way To Keep Colon Cancer From Returning - HuffPost
• I am married for 3 years. My husband keeps pressing my boobs 40-50 times a day. He never stops though I ask him not to. What I should do to stop it?
• Why cant I sleep even tho I am sleepy? I am not anxious or worried but my body just doesn't want to. I've been awake for almost 2 days and feel sleepy but I cant sleep. My doctor said its anxiety related but its not. Is this normal?
• Can people who have never met you tell if you are a covert narcissist?
• My cantankerous beagle is very badly behaved at the dog park and always starts barking at the other dogs. Would pepper spray be an effective method to correct his inappropriate behavior?
• Dementia: Switching to MIND diet even later in life can lower risk - Medical News Today
• Destiny 2: The Edge Of Fate Draws On Metroidvanias To Bring You Back In - GameSpot
• Seahawks defenders want to "put the team on our back" - NBC Sports
• Millions of Eggs Recalled After CDC Ties Them to a Massive Salmonella Outbreak Across 9 States - Food & Wine
• Eating More of These Foods May Lower Your Cancer Risk by 8%, New Study Suggests - EatingWell
• I'm a 27 year old male currently but I am going through going through gender dysphoria. Why do some transgender people (specifically transgender women since I see that the most) call themselves trannies or shemales? Aren't those offensive words?