Bettiah (Bihar), Feb 12: A resident of Pipra village in Bihar’s West Champaran district has taken a vow to remain unmarried for environmental protection, similar to ‘Bhishma’ in ‘Dvapara yuga’ (in Hinduism, an age believed to be the best of the four yugas) took a vow of lifelong celibacy for his father’s happiness. Gajendra Yadav, of Pipra village under Narwal Borwal Panchayat of Bagaha block, has planted about eight lakh saplings so far.