|
| Category | Description | Number of tweets | Checked |
|
| Event 1 | Death of Amy Winehouse | 774 | ✓ |
| Event 2 | Space shuttle Atlantis lands safely, ending NASA’s space shuttle program | 45 | |
| Event 3 | Betty Ford dies | 8 | |
| Event 4 | Richard Bowes, victim of London riots, dies in hospital | 27 | |
| Event 5 | Flight Noar Linhas Aereas 4896 crashes, all 16 passengers dead | 9 | |
| Event 6 | S&P downgrades US credit rating | 275 | ✓ |
| Event 7 | US increases debt ceiling | 73 | ✓ |
| Event 8 | Terrorist attack in Delhi | 40 | |
| Event 9 | Earthquake in Virginia | 271 | ✓ |
| Event 10 | Trevor Ellis (first victim of London riots) dies | 63 | |
| Event 11 | Goran Hadzic, Yugoslavian war criminal, arrested | 2 | |
| Event 12 | India and Bangladesh sign a peace pact | 3 | |
| Event 13 | Plane carrying Russian hockey team Lokomotiv crashes, 44 dead | 225 | ✓ |
| Event 14 | Explosion in French nuclear power plant Marcoule | 137 | ✓ |
| Event 15 | NASA announces discovery of water on Mars | 110 | ✓ |
| Event 16 | Google announces plans to buy Motorola Mobility | 130 | ✓ |
| Event 17 | Car bomb explodes in Oslo, Norway | 21 | |
| Event 18 | Gunman opens fire in children’s camp on Utoya island, Norway | 28 | |
| Event 19 | First artificial organ transplant | 16 | |
| Event 20 | Petrol pipeline explosion in Kenya | 27 | |
| Event 21 | Famine declared in Somalia | 71 | ✓ |
| Event 22 | South Sudan declares independence | 26 | |
| Event 23 | South Sudan becomes a UN member state | 7 | |
| Event 24 | Three men die in riots in Birmingham | 12 | |
| Event 25 | Riots break out in Tottenham | 19 | |
| Event 26 | Rebels capture Tripoli international airport, Libya | 4 | |
| Event 27 | Ferry sinks in Zanzibar, around 200 dead | 21 | |
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