The whole atmosphere of the age of Kali is magnified by the deluding energy, and the proportion of measurement is inexplicable.
(Srimad Bhagavatam-----1:17:23-----purport).

With the progression of the age of Kali, people are becoming very proud, and attached to women and intoxication. By the influence of the age of Kali, even a pauper is proud of his penny, the women are always dressed in an overly attractive fashion to victimize the minds of men, and the man is addicted to drinking wine, smoking, drinking tea and chewing tobacco, etc.
(Srimad Bhagavatam-----1:17:24-----purport).

We have to see things by their resultant action. The resultant action of human civilization in the age of Kali is dissatisfaction, so everyone is anxious to get peace of mind. This peace of mind was complete in the Satya age because of the existence of the above-mentioned attributes of the human beings. Gradually these attributes have diminished in the Tretā-yuga to three fourths, in the Dvāpara to half, and in this age of Kali to one fourth, which is also gradually diminishing on account of prevailing untruthfulness.
(Srimad Bhagavatam-----1:17:25-----purport).

Unfortunately, in the age of Kali the lower-class men, without training, occupy the post of a ruler by strength of popular votes, and instead of protecting the sufferers, such men create a situation quite intolerable for everyone. Such rulers illegally gratify themselves at the cost of all comforts of the citizens, and thus the chaste mother earth cries to see the pitiable condition of her sons, both men and animals. That is the future of the world in the age of Kali, when irreligiosity prevails most prominently.
(Srimad Bhagavatam-----1:17:27-----purport).

The age of Kali is called the fallen age. In this fallen age, because the living beings are in an awkward position, the Supreme Lord has given some special facilities to them. So by the will of the Lord, a living being does not become a victim of a sinful act until the act is actually performed. In other ages, simply by thinking of performing a sinful act, one used to become a victim of the act. On the contrary, a living being in this age is awarded with the results of pious acts simply by thinking of them. Mahārāja Parīkṣit, being the most learned and experienced king by the grace of the Lord, was not unnecessarily envious of the personality of Kali because he did not intend to give him any chance to perform any sinful act. He protected his subjects from falling prey to the sinful acts of the age of Kali, and at the same time he gave full facility to the age of Kali by allotting him some particular places. At the end of the Śrīmad-Bhāgavatam it is said that even though all nefarious activities of the personality of Kali are present, there is a great advantage in the age of Kali. One can attain salvation simply by chanting the holy name of the Lord. Thus Mahārāja Parīkṣit made an organized effort to propagate the chanting of the Lord's holy name, and thus he saved the citizens from the clutches of Kali. It is for this advantage only that great sages sometimes wish all good for the age of Kali. In the Vedas also it is said that by discourse on Lord Kṛṣṇa's activities, one can get rid of all the disadvantages of the age of Kali. In the beginning of the Śrīmad-Bhāgavatam it is also said that by the recitation of Śrīmad-Bhāgavatam, the Supreme Lord becomes at once arrested within one's heart. These are some of the great advantages of the age of Kali, and Mahārāja Parīkṣit took all the advantages and did not think any ill of the age of Kali, true to his Vaiṣṇavite cult.
(Srimad Bhagavatam-----1:18:7-----purport).

As aforementioned, one year of the demigods is equal to 360 years of the human beings. The duration of the Satya-yuga is therefore 4,800 x 360, or 1,728,000 years. The duration of the Tretā-yuga is 3,600 x 360, or 1,296,000 years. The duration of the Dvāpara-yuga is 2,400 x 360, or 864,000 years. And the last, the Kali-yuga, is 1,200 x 360, or 432,000 years.
(Srimad Bhagavatam-----3:11:19-----purport).

Especially in this age of Kali, everyone is overwhelmed by the madness to accumulate paraphernalia for material enjoyment.
(Srimad Bhagavatam-----3:20:18-----purport).

The government administration in the present age (Kali-yuga) is bereft of all godly qualities.
(Srimad Bhagavatam-----4:12:12-----purport).

In Kali-yuga there are many self-made incarnations, rascals, who declare themselves to be the Supreme Personality of Godhead.
(Srimad Bhagavatam-----4:19:10-----purport).

In this age of Kali, those who have a little fragmental portion of mystic power claim to be God, but such pseudo Gods can only be accepted as fools, for only Kṛṣṇa is the Supreme Person who possesses all mystic and yogic perfections.
(Srimad Bhagavatam-----4:24:42-----purport).

In this age of Kali especially, no one is interested in spiritual advancement. Even though it is sometimes found that one may be interested in spiritual advancement, he is most likely to accept a bogus method of spiritual life, being misguided by so many pretenders.
(Srimad Bhagavatam-----4:25:39-----purport).

In Kali-yuga, due to the increase of the modes of passion and ignorance, almost all men are asuric, or demoniac; therefore they are very much fond of eating flesh, and for this end they maintain various kinds of animal slaughterhouses.
(Srimad Bhagavatam-----4:26:5-----purport).

In this Kali-yuga, the demoniac mentality is employed in manufacturing various machines to facilitate the process of sense gratification.
(Srimad Bhagavatam-----4:27:14-----purport).

The total population in this age of Kali-yuga is very bad, lazy, unfortunate and disturbed by material conditions.
(Srimad Bhagavatam-----4:30:48-----purport).

In Kali-yuga, different religious sects consider their God to be different from the God of others, but that is not possible. God is one, and He is appreciated according to different angles of vision. In this verse the word kaivalyāt means that God has no competitor. There is only one God. In the Śvetāśvatara Upaniṣad (6.8) it is said, na tat-samaś cābhyadhikaś ca dṛśyate: "No one is found to be equal to Him or greater than Him." That is the definition of God.
(Srimad Bhagavatam-----5;3:17-----purport).

Due to the influence of this age of Kali, they are apt to concoct false religious systems.
(Srimad Bhagavatam-----5:6;10-----purport).

Especially in this age of Kali, family life is being reduced.
(Srimad Bhagavatam-----5:13:8-----purport).

The Kalki avatāra is the fierce incarnation who vanquishes the class of the atheists born in this age of Kali. Now, in the beginning of Kali-yuga, many irreligious principles are in effect, and as Kali-yuga advances, many pseudo religious principles will certainly be introduced, and people will forget the real religious principles enunciated by Lord Kṛṣṇa before the beginning of Kali-yuga, namely principles of surrender unto the lotus feet of the Lord. Unfortunately, because of Kali-yuga, foolish people do not surrender to the lotus feet of Kṛṣṇa. Even most people who claim to belong to the Vedic system of religion are actually opposed to the Vedic principles. Every day they manufacture a new type of dharma on the plea that whatever one manufactures is also a path of liberation. Atheistic men generally say, yata mata tata patha. According to this view, there are hundreds and thousands of different opinions in human society, and each opinion is a valid religious principle. This philosophy of rascals has killed the religious principles mentioned in the Vedas, and such philosophies will become increasingly influential as Kali-yuga progresses. In the last stage of Kali-yuga, Kalkideva, the fierce incarnation of Keśava, will descend to kill all the atheists and will save only the devotees of the Lord.
(Srimad Bhagavatam-----6:8:19-----purport).

In this age of Kali the manifested demigods are also not to be seen, for space travel has completely stopped.
(Srimad Bhagavatam-----2:6:29-----purport).

The entire world is working under the influence of the modes of material nature, especially ignorance and passion, but if people engage in hearing and chanting about the glories of the Supreme Lord, their lives can be successful, and they can be elevated to the highest perfection. In the Bṛhan-nāradīya Purāṇa, therefore, it is said:
harer nāma harer nāma
harer nāmaiva kevalam
kalau nāsty eva nāsty eva
nāsty eva gatir anyathā
(CC:1:17:21)
"In this age of Kali, there is no other way, no other way, no other way for spiritual perfection than the holy name, the holy name, the holy name of the Lord." Everyone should be given the chance to hear the holy names of the Supreme Personality of Godhead, for thus one will gradually come to understand his real position in life and be elevated to the transcendental position above the mode of goodness.
(Srimad Bhagavatam-----5:1:15-----purport).

In this age of Kali, the process of hearing kṛṣṇa-kathā is the most effective means to gain release from unwanted family affection and thus find permanent freedom in life. The age of Kali is full of sinful reactions, and people are more and more addicted to the qualities of this age, but simply by hearing and chanting of kṛṣṇa-kathā one is sure to go back to Godhead.
(Srimad Bhagavatam-----3:5:44-----purport).

As far as transcendental vibrations are concerned, the essence of all Vedic knowledge is the mahā-mantra—Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare. In Kali-yuga, if this Vedic mahā-mantra is chanted regularly and heard regularly by the devotional process of śravaṇaṁ kīrtanam (S.B.7:5:23), it will purify all societies, and thus humanity will be happy both materially and spiritually.
(Srimad Bhagavatam-----4:18:14-----purport).