| No alien invasion in primary forest (PDF Format) | 15/01/2004 |
| Paternity tests for orchids (PDF Format) | 06/10/2002 |
| Nature park for southern isles (PDF Format) | 28/05/2001 |
| Nature park for Southern Islands (PDF Format) | 27/05/2001 |
| Island Life (PDF Format) | 12/05/2001 |
| Saving native plants here from extinction (PDF Format) | 19/04/2001 |
| Many wild plants lost (PDF Format) | 18/06/2000 |
| It could be the Bill Gates of plants (PDF Format) | 01/03/1999 |
| Bukit Timah Reserve gets room to spread (PDF Format) | 06/061995 |