The Congress and environmentalists have slammed the government advisory that asked ISRO and several other government agencies and institutes not to interact with the media or share information on social media on the situation in Joshimath. Concerns over land subsidence in Joshimath mounted on Friday as satellite images released by ISRO showed the Himalayan town sank 5.4 cm in 12 days. Why stop data and information from coming when it can help plan better? Is PR priority over public safety?